So Fix it

The fuel pump to your Saturn is what pressurizes the gasoline in the fuel tank and sends it to the fuel injectors and then to the engine to burn. If you are experiencing problems while driving your Saturn, such as sudden bursts of acceleration when pressing on the gas pedal steady or if the fuel pump is making noise and/or leaking, then the pump may be faulty and need replacing. This is a task that requires additional and more advanced knowledge about automotive repair, specifically in fuel and exhaust systems.

Instructions

Removing the Fuel Pump/Level Sensor Module

1

Relieve your Saturns fuel pressure system. Remove the fuel cap to equalize the pressure in the fuel tank.

2

Remove the negative cable from the battery.

3

Raise your Saturn with the jack and support it with jack stands.

4

Remove the fuel tank from under your Saturn. The tank must be as empty as possible, which may require some siphoning (with a siphoning kit).

5

Pinch together the legs of the retainers on the supply and return fuel lines with your needle-nose pliers. Pull the fittings from the fuel pump/level sensor module. Use a shop rag for any spilled fuel.

6

Mark on the fuel pump and on the fuel tank its exact position in the tank. Make sure these indicators align.

7

Unscrew the modules locknut counter-clockwise with your large channel locks. You may need to loosen the locknut using a hammer and a brass (not steel) punch.

8

Take out the module through the mounting hole. Be caul not to abruptly pull on the module, potentially breaking off the float or float arm into the fuel tank.

9

Check the O-ring seal on the mounting flange and replace if damaged.

Installing the New Fuel Pump/Level Sensor Module

10

Mark the new module on the same areas you marked on the old module to erence its position in the fuel tank.

11

Install the new fuel pump/level sensor module into the mounting hole of the fuel tank with care. Do not harm the fuel inlet strainer, float arm and float while inserting the module. Line up the markings you made on the module and fuel tank.

12

Install and screw on the modules locknut. Tighten it down with your channel locks.

13

Connect the fuel supply and return lines to the module. Check that they are secure on the module by lightly twisting and tugging them.

14

Install the fuel tank back under your Saturn.

15

Pour the fuel from the gas can into the filler hole. Install and tighten the fuel cap.

16

Reconnect the negative cable on the battery.

17

Remove the jack stands and lower your Saturn.

The Jeep Wrangler is a compact sport utility vehicle with four-wheel drive produced by Chrysler since 1987. The engine in all versions of the 2000 Jeep Wrangler is a 6-cylinder 4.0-liter which uses multi-port fuel injection. This type of fuel injection requires an electric fuel pump that delivers fuel to the engine under high pressure. The fuel pump in a 2000 Jeep Wrangler is located in the fuel tank, which you must remove in order to replace the fuel pump.

Instructions

1

Remove the fuel pump relay from the power distribution center. Start the engine, and allow it to run until it stalls. Crank the engine to ensure that it will not start, and turn the ignition switch to the off position. Disconnect the cable to the batterys negative terminal with a socket wrench to prevent accidental sparking while you work on the vehicle.

2

Drain the fuel tank by siphoning the fuel through the filler cap opening into a container approved for gasoline. Disconnect the fuel filler from the body of the vehicle with a socket wrench. Remove the right rear tire and its wheelhouse liner to gain access to the two vapor lines for the fuel tank, and disconnect the vapor lines. Detach the electrical connector and fuel supply line for the fuel tank.

3

Support the fuel tank with a transmission jack, and remove the bolts that hold the fuel tank to the skid plate. Lower the fuel tank slightly, so you can disconnect the fuel filler hose from the fuel tank. Remove the nuts for the fuel tank straps, and separate the fuel tank from the skid plate. Remove the fuel tank from the vehicle.

4

Place special tool 9340 into the notches on the outside edge of the lock ring of the fuel pump. Attach a 1/2-inch breaker bar to the special tool, and rotate the breaker bar counterclockwise. Remove the lock ring from the fuel pump module, and detach the fuel pump module from the fuel tank. Discard the gasket on the fuel tank.

5

Install a new gasket on the fuel tank, and install the new fuel pump into the fuel tank. Place the locking ring on the fuel pump module, and align the arrow on the locking ring with the center alignment mark on the fuel pump module. Turn the locking ring clockwise with special tool 9340 until the notches on the locking ring engage. Install the fuel tank by reversing steps 3 and 2. Tighten the nuts for the fuel tank strap so there is 30 mm of clearance between the bottom of the nuts and the end of the strap studs. Tighten the nuts for the skid plate to 141 inch-lbs. with a torque wrench. Fill the fuel tank, and connect the cable to the negative terminal of the battery. Start the engine and check for fuel leaks.

The Isuzu Rodeo was a pickup truck manufactured by Isuzu from 1988 to 2002, when the D-Max replaced it. The 2001 Rodeo may have a four-cylinder, 2.2L engine or a six-cylinder, 3.2L engine. All versions of the 2001 Isuzu Rodeo use multi-port fuel injection, which requires a high-pressure electric fuel pump. The fuel pump in these vehicles is located on top of the fuel tank, which requires you to remove the fuel tank to gain access to it.

Instructions

1

Remove the filler cap, and disconnect the fuel pump relay in the relay box under the hood. Start the engine and allow it to stall. Crank the engine for an additional 30 seconds and turn the ignition off. Drain the fuel tank, and disconnect the cable to the batterys negative terminal with a socket wrench.

2

Disconnect the fuel filler lines and vent lines from the fuel tank. Remove the skid plate for the fuel tank. Disconnect the electrical connector from the fuel tank. Disconnect the fuel supply line and the fuel return line from the fuel tank.

3

Raise the vehicle with a floor jack and support the fuel tank with a jack stand. Disconnect the mounting bolts for the fuel tank with a socket wrench. Lower the fuel tank to the ground with the jack. Remove the fuel pump assembly from the fuel tank.

4

Install the new fuel pump assembly to the fuel tank. Connect the fuel tank and tighten its mounting bolts to a torque of 27 foot-pounds with a torque wrench. Connect the fuel supply line and fuel return line to the fuel tank. Connect the electrical connector to the fuel tank.

5

Attach the skid plate to the fuel tank. Connect the fuel filler line and vent line to the fuel tank. Connect the cable to the batterys negative terminal and fill the tank with fuel. Start the engine and inspect the fuel lines for leaks.

The fuel pump to your 1993 Ford Explorer is designed to pressurize fuel that then travels through the fuel injectors and into the engine. A faulty fuel pump may be responsible for problems related to engine stalling and no-start conditions. Replacing the fuel pump is a procedure that can be done at home if you know how to remove the fuel tank and the fuel pumps fuel feed line and return lines, which are separate procedures that require separate tools. Other than acquiring the replacement parts, there are no special tools needed to perform this task on your own.

Instructions

Removing the Fuel Pump

1

Relieve the fuel pressure system by disconnecting the electrical connector from the inertia shut-off switch, located on the passenger-side floor pan below the heater, and run the Explorer for several seconds until it stops.

2

Siphon the fuel tank until it is empty with a siphoning kit.

3

Remove the negative cable from the battery.

4

Jack the Explorer and support it, using jack stands.

5

Remove the fuel tank. This is a separate procedure.

6

Remove the fuel feed line and the return lines from the fuel pump module. This is a separate procedure.

7

Caully knock loose the fuel-pump-module lock ring counterclockwise, using a brass punch and hammer.

8

Pull out the fuel pump from the fuel tank. Tilt the pump as you are doing this to prevent the fuel level float and sending unit from breaking off in the fuel tank.

9

Replace the O-ring seal on the tank if it is damaged.

10

Separate the electrical connector from the fuel pump. Use a small wrench to loosen the fuel hose lower clamp.

11

Separate the C-clip from the bottom of the fuel pump to remove the pump strainer using a flat-head screwdriver. If the strainer appears too contaminated to be cleaned with solvent, replace it.

Installing the New Fuel Pump

12

Wipe clean the fuel pump mounting area with a rag. Use thick grease for the new O-ring seal and place it around the opening on the fuel tank.

13

Attach the strainer to the new fuel pump and clip on the C-clip.

14

Install the new fuel pump to the fuel pump assembly by connecting the electrical connector to the fuel pump and tightening the clamp with a flat-head screwdriver.

15

Insert the fuel pump assembly into the fuel tank. Be caul not to damage the fuel level float and sending unit when installing the assembly.

16

Tighten the lock ring clockwise until the locking cams are underneath the retaining tangs. The new O-ring seal may make it difficult for it to lock, so you might have to push down while turning the lock ring.

17

Follow steps 6 to 3 of Section 1 in reverse order. Add gas to your Explorer. Follow Step 1 of Section 1 in reverse order to finish.

A 3100 engine is a 3.1-liter version of the 60-degree V-6 engines from General Motors. It was in production from 1993 to 2005, and appears in many General Motors vehicles from this period, especially Buicks. The 3100 engine has sequential fuel injection, which uses fuel injectors under electronic control to deliver fuel to the cylinders. The procedure for replacing the fuel injectors in a 3100 engine is the same for all vehicles made after 2000.

Instructions

1

Remove the cable from the negative battery terminal so you dont start the engine accidentally. Open the filler cap on the fuel tank to relieve the fuel tank pressure.

2

Wrap a shop rag around the pressure test fitting on the fuel rail. Attach a fuel pressure gauge to the fitting, and place the bleed hose on the pressure gauge into a gasoline container. Open the valve on the pressure gauge to relieve the pressure in the fuel rail, and drain the excess fuel into the container.

3

Disconnect the upper intake manifold from the engine with a socket wrench. Detach the fuel send and return lines from the fuel injector. Remove the electrical connectors from the fuel injector and the coolant temperature sensor.

4

Disconnect the fuel rail from the cylinder heads with a socket wrench. Detach the retaining clips from the fuel injector, and remove the fuel injector from the fuel rail. Discard the O-rings on the fuel injector.

5

Lubricate the new O-rings with engine oil, and mount them on the new fuel injector. Connect the fuel injector to the fuel rail, and attach the retaining clips to the fuel injector. Install the fuel rail to the engine, and torque its mounting bolts to 7 foot-pounds with a torque wrench.

6

Attach the electrical connectors for the coolant temperature sensor and fuel injector. Connect the fuel send and return lines to the fuel injector, and tighten their retaining nuts to 13 foot-pounds with a torque wrench. Install the upper intake manifold, and tighten its mounting bolts to 18 foot-pounds.

7

Attach the negative battery cable with a socket wrench, and fasten the fuel filler cap. Start the engine and check for fuel leaks.

You will need to remove the fuel pump cover if you are cleaning the fuel pump, the fuel pump filter or the fuel tank strainer on your vehicle. These parts are cleaned when you are troubleshooting a vehicle that is experiencing inadequate fuel pressure or a fuel leak. Not all vehicles have a fuel pump cover, but if yours does, removing the cover is a fairly straightforward job requiring a few basic tools.

Instructions

1

Disconnect the negative (black) cable from the battery.

2

Raise the vehicle with a car jack to allow you easy access underneath.

3

Locate the fuel pump cover on the bottom side of fuel tank, under the vehicle.

4

Remove the bolt from the strap holding down the fuel cover, using a 13 mm wrench. The bolt is usually located near the wheel well.

5

Pull the fuel cover from the fuel tank. It will come off easily once the strap is removed.

Harley gas tanks must never leak and when they leak they must never be repaired. Leaking tanks must be scrapped and replaced. New gas tanks leak because of defective welds. If pressure testing reveals a leak in a new tank the tank should be returned to the place of purchase for a und. Used gas tanks leak because of camouflaged collision damage or internal corrosion. Used tanks should always be stripped of paint and bead blasted before pressure testing. Gas tanks must always be empty and dry before being worked on. Pressure testing requires a reliable source of clean, dry, compressed air.

Instructions

1

Connect the air compressor to the air tank with an air hose and two air hose fittings. Regulate the pressure of the compressed air released from the air tank with an air pressure gauge. Use the regulated compressed air with a pressurized air line and detachable fittings.

2

Drop a one foot length of light chain into the gas tank through the filler opening. Shake the tank to loosen and remove any rust inside the tank. Remove the chain.

3

Turn the tank upside down and shake vigorously. Attach a blower fitting to a pressurized air line. Blast the inside of the tank with pressurized air.

4

Seal the petcock opening on the bottom of the gas tank with an air hose fitting attached to a pressurized air line. If necessary, install a fuel petcock and fit the air hose to the petcock with a hose fitting and a flat head screwdriver.

5

Prepare a solution of 50 percent dish washing detergent and 50 percent water. Adjust the air pressure leaving the compressed air tank to 15 pounds per square inch above atmosphere.

6

Seal the gas cap and pressurize the inside of the gas tank to 15 pounds per square inch above atmosphere. Paint the exterior of the gas tank with the detergent-water solution using a paint brush.

7

Look for air bubbles. Any air bubble indicates a leak and a defective gas tank.

The Chevrolet Tahoe is a full-size sport utility vehicle, or SUV, thats virtually identical to the GMC Yukon. A 1997 Chevrolet Tahoe most often has an 8-cylinder, 5.7-liter engine with 2-wheel or 4-wheel drive. This vehicle has sequential fuel injection, which requires a fuel pump that delivers fuel to the injectors at high pressure. The fuel pump in a 1997 Chevrolet Tahoe is in the fuel tank, so you must remove the fuel tank to replace the fuel pump.

Instructions

1

Disconnect the cable to the batterys negative terminal with a socket wrench. Loosen the filler cap on the fuel tank to relieve the pressure in the fuel tank. Drain the fuel tank by siphoning the fuel into a gasoline container with a hose. Raise the rear of the vehicle with a jack and support it on jack stands. Release the clamps on the hoses for the filler neck and vent tube of the fuel tank. Support the fuel tank with jack stands and detach the support straps for the fuel tank. Lower the fuel tank slightly and disconnect the electrical connections and hose on the fuel tank. Remove the fuel tank from the vehicle.

2

Turn the retaining ring on the fuel sender assembly counterclockwise with tool J-39765. Remove the retaining ring. Lift the fuel sender assembly out of the fuel tank and pull the fuel pump into the attaching hose while holding the bottom support of the fuel pump in place. Discard the O-ring on the fuel tank.

3

Install the new fuel pump into the attaching hose of the fuel sender assembly. Use care to avoid bending the fuel strainer since this will restrict fuel flow. Place a new O-ring on the fuel tank and install the fuel sender assembly into the fuel tank.

4

Place the locking ring on the fuel sender assembly and turn it clockwise with tool J-39765 until the ring locks into place.

5

Install the fuel tank by reversing step 1. Pressurize the fuel system by turning the ignition on for two seconds and turning it off for 10 seconds. Turn the ignition on and check the fuel lines for leaks.

A 350 Chevy can be any engine in a Chevrolet vehicle with a displacement of 350 cubic inches. The last version of this engine was the Vortec 5700, which appeared in full-size Chevrolet trucks from 1996 to 2002. The 350 Chevy engine used central sequential fuel injection, which fires the fuel injectors in a specific order. The installation procedure for the fuel injectors is the same for all trucks with a 350 Chevy engine made after 1998.

Instructions

1

Turn the ignition off and remove the cable from the negative battery terminal with a socket wrench. Open the filler cap on the fuel tank to release the fuel tank pressure.

2

Wrap a shop towel around the pressure fitting on the fuel rail and connect a fuel pressure gauge to the pressure fitting. Place the free end of the bleed hose of the pressure gauge into a container suitable for gasoline. Open the valve on the pressure gauge to relieve the fuel system pressure and disconnect the fuel pressure gauge from the pressure fitting.

3

Detach the electrical connectors from the fuel pipes on the engine. Disconnect the fuel send and return lines from the fuel pipes with a socket wrench and discard the O-rings for the fuel lines. Remove the upper intake manifold from the engine with a socket wrench. Release the lock tabs on the fuel meter and disconnect the fuel meter from the engine.

4

Remove the retaining nuts on the lower hold-down plate for the fuel injectors with a socket wrench and disconnect the hold-down plate. Pull the nozzle of each fuel injector down as you push a small pry tool between the electrical terminals of the fuel injector. Pry the injector out of its socket on the fuel meter and discard the O-ring on the fuel injector.

5

Lubricate the O-rings for the fuel injectors with engine oil and mount the new O-rings to the new fuel injector. Install the new fuel injector to its socket on the fuel meter. Attach the lower hold-down plate and tighten its retaining nuts to 27 inch-pounds with a torque wrench.

6

Connect the fuel meter to the intake manifold and tighten the retaining bolts to 88 inch-pounds. Attach the lock tabs for the fuel meter bracket to secure the fuel meter in place. Connect new electrical connectors for the fuel injectors. Mount new O-rings on the fuel lines and attach the fuel lines to the fuel pipes on the engine. Tighten the retaining nuts for the fuel lines to 22 foot-pounds with a torque wrench.

7

Turn the ignition on for two seconds, then turn it off for 10 seconds to pressurize the fuel system. Turn the ignition back on and correct any fuel leaks.

Properly working fuel injectors allow a vehicles engine to run and perform at a high level. However, even a slight clogging of an injector is enough to cause driveability issues with your vehicle. Its beneficial to be able to determine if a fuel injector is working properly.

Symptoms

There are several symptoms an automobile can display that will help you determine if your fuel injector is working properly, such as power loss to the vehicle. A car that hesitates when you attempt to take off from a dead stop is also a classic sign of fuel injector problems.

Testing

Another way to check and see if your fuel injectors are working properly is by running a flow test on them. The standard rate at which fuel should flow from the injectors can be compared with the injectors current flow rate. A flow that is not up to par indicates that your injectors have problems that need addressing.

Mileage

Yet another way to find clues about the condition of your injectors is by figuring out the mileage that has been traveled with them. Because experts suggest that fuel injectors should be cleaned before reaching 30,000 miles, distances over this benchmark indicate a need to at least have your fuel injectors checked.

The Honda Integra was a compact sports car manufactured from 1985 to 2007. The last generation of the Integra includes the 2002 through 2007 model years, which Honda sold as the Acura RSX in the United States. A late-model Integra has a four-cylinder, 2.0-liter engine with multi-port fuel injection. Each fuel injector sends fuel to a cylinder in a specific sequence. The installation of the fuel injectors also requires you to relieve the pressure in the fuel system.

Instructions

1

Remove the cable from negative battery terminal with a socket wrench. Detach the kick panel under the dashboard and remove the fuel pump relay from the fuse box. Start the engine and allow it to stall to relieve the pressure in the fuel system. Open the fuel filler cap to relieve the pressure in the fuel tank. Replace the fuel pump relay, and fasten the kick panel. Close the fuel filler cap.

2

Disconnect the cover on the intake manifold with a socket wrench, if your vehicle is so equipped. Detach the electrical connectors from the fuel injectors. Release the quick-connect fittings on the fuel line, and detach the fuel line from the fuel rail. Disconnect the fuel line and vacuum hose on the fuel pressure regulator.

3

Remove the mounting nuts for the fuel rail with a socket wrench, and detach the fuel rail from the intake manifold. Release the retaining clip for the fuel injector. Pull the fuel injector up as you rock it from side to side to remove it from the injector bore. Discard the O-rings on the fuel injector.

4

Coat the new O-rings with a thin layer of gasoline, and mount them to the new fuel injectors. Install the fuel injectors to the fuel rail, and attach the retaining clips. Mount the fuel rail to the intake manifold, so the injectors fit into the injector bases. Fasten the mounting nuts for the fuel rail, and tighten them to 16 foot-pounds with a torque wrench.

5

Attach the fuel line to the fuel rail, and connect the quick-connect fittings. Install the fuel line and vacuum hose to the fuel pressure regulator. Attach the electrical connectors to the fuel injectors. Replace the cover for the intake manifold with a socket wrench, if your vehicle is so equipped.

6

Connect the cable to the negative battery terminal with a socket wrench. Start the engine and allow it to idle for two minutes. Turn the engine off and correct any fuel leaks.

Fuel pumps transfer pressurized fuel to various engine components. Some vehicles, such as older motorcycles, do not require fuel pumps. Fuel injected engines use a fuel pump that is mounted on the inside of the fuel tank. There are options available to replace the fuel pump on a 1994 Chevrolet Blazer.

Mr. Gasket

The Mr. Gasket company manufactures the micro electric fuel pump, model 12S. The pump is compatible with 1994 Chevy Blazer vehicles. The pump can be used alone or as a booster pump. The micro electric fuel pump has a two wire design and works on vehicles with a 12-volt negative ground system. The pump delivers 35 gallons of fuel per hour under four to seven pounds per square inch of pressure. Instructions are included for self-installation. The universal design fits most domestic, non-diesel four, six and eight-cylinder vehicles.

Airtex

The Airtex electric fuel pump, part number E3902, is compatible with 1994 Chevy Blazer vehicles. A strainer is required to validate the pump warranty. Airtex electric pumps feature brush and terminal assembly, which prolong the life of the fuel pump. The ball check valve ensures fuel is delivered under a consistent pressure level. The inlet is specially molded to reduce friction. A screen filters out fuel contaminants.

Delphi

Delphi electronic fuel pumps feature internal steel plated, all metal components. The pump has internal springs that enhance stability and reduce tube chafing. Delphi electronic pumps have a large volume reservoir that delivers continuous fuel during vehicle cornering and low-fuel situations. A two-strainer system greatly reduces fuel contaminants. Delphi guarantees a correct gas gauge reading with its pumps. Installation is facilitated with a color-coded wire harness.

Determining the size of a fuel line in a vehicle or motorcycle is important prior to replacing it. The fuel line, along with the other parts of a fuel system, are responsible for delivering the fuel from the fuel cell into the carburetor. It is important to have the right size so the vehicle operates efficiently. The size of the fuel line is determined by the outside diameter. Completing the measurement is simple and takes relatively few tools. The same steps can be used to measure other types of tubing, such as those for brake lines.

Instructions

1

Uncover the fuel line so that it is visible and can be reached easily. Do not remove the fuel line or disconnect it.

2

Place the top of a 1/4-inch wrench with an open end over the fuel line. Slide it caully over the line so that it fits snugly against the tubing. Read the wrenchs measurements to determine the diameter of the fuel line.

3

Place a caliper over the fuel line if the wrench did not give an accurate reading. Calipers are used to measure distance between two sides of one object. Adjust the tips of the caliper to fit tightly on either side of the line. Remove the caliper. Place the tips on a ruler and read the measurement.

On October 22, 2009, General Motors and the National Highway Traffic Safety Administration announced a recall of 69,139 vehicles including 2006-2007 model year Chevy Cobalts for fuel pump problems. Registered vehicle owners should have been notified by mail and instructed where to bring the vehicle for free repair.

Defect

General Motors initiated the recall for certain 2006-2007 Chevy Cobalts because the plastic supply or return port on the modular reservoir assembly could crack. If a crack happens, fuel will leak from the area. If the crack becomes large enough, fuel may be observed dripping onto the ground.

Consequences

Per the NHTSA, vehicle performance could be affected in these vehicles. More importantly, a gas leak in the presence of an ignition source could potentially result in a fire.

Remedy

Registered vehicle owners were expected to be notified by mail of the recall on or around February 4, 2010 with instruction on which authorized dealers will replace the fuel pump modules for free, according to General Motors and the NHTSA. Vehicle owners who did not receive notice or are concerned about the recall may contact General Motors or the NHTSA to determine whether their vehicles might have been affected.

Electric fuel pumps force fuel from the fuel tank through the fuel injection system. In older vehicles, before fuel injection systems, the fuel pump was not electric and the fuel was pumped to a carburetor. In newer cars, electric fuel pumps are located in the gas tank, and their removal can be a tricky operation. There are many safety precautions to take before attempting to remove an electric fuel pump from a vehicle.

Instructions

1

Put the vehicle in park and set the parking brake. Brace both front tires with safety blocks to ensure the vehicle wont move during the repair.

2

Siphon the remaining fuel in the gas tank into a fuel container. The gas tank will need to be nearly empty for this repair. Unscrew the fuel cap on the side of the vehicle and insert a length of hose into the fuel tank. Use a hand pump to start the siphoning action and catch the fuel inside the fuel container.

3

Lift the vehicle by placing two jacks at the back corners of the vehicle, one on each side. Using two jacks will provide more support for the vehicle.

4

Disconnect the filler and vent hoses from the fuel tank. These will be held on with a clamp.

5

Use a socket wrench to remove the bolts that hold the tank to the vehicle on the side that the hose is connected on. Gently lower the fuel tank down a bit. This will allow sufficient space to disconnect all of the wires and connections from the pump to the fuel tank by using wrenches or pliers.

6

Disconnect the other two bolts holding the fuel tank in place. Place the tank on the ground.

7

Remove the fuel pump by releasing the clamps on the pump. Sometimes the pump is also held in place by screw nuts which require a wrench to remove. Extract the fuel pump from the fuel tank and set the pump aside.

The Mitsubishi Eclipse is a two-door coupe that is also sold as the Plymouth Laser and Eagle Talon. It has been in continuous production since 1990, and the 1992 model is a first-generation Eclipse. The 1992 Mitsubishi Eclipse has either a four-cylinder 1.8L engine or a four-cylinder 2.0L engine. All versions of this vehicle use multi-port fuel injection that requires high-pressure fuel delivery. Replacing the fuel pump in the Mitsubishi Eclipse requires you to remove the fuel tank.

Instructions

1

Loosen the filler cap on the fuel tank and detach the electrical connector for the fuel pump on the fuel tank. Start the engine and wait for it to stall. Turn the ignition off and disconnect the cable to the negative terminal on the battery with a socket wrench.

2

Raise the vehicle with a floor jack. Siphon the fuel from the fuel tank with a hose and drain it into a container approved for gasoline. Disconnect the electrical harness for the fuel gauge unit. Detach the fuel line from the fuel pump.

3

Remove the nuts from the support straps of the fuel tank with a socket wrench. Disconnect the attaching bolt for the right lateral rod and detach the rod from the right body coupling. Lower the rod and suspend it with wire from the axle beam. Disconnect the holding bolt on the fuel tank and discard its gasket. Disconnect the fuel pump from the fuel tank.

4

Align the nipples on the new fuel pump with the corresponding projections on the fuel tank and install the fuel pump onto the fuel tank. Install the new gasket for the holding bolt and connect the holding bolt on the bottom of the fuel tank. Tighten the holding bolt to 10 ft.-lbs. with a torque wrench. Connect the right lateral rod to the body coupling with the attaching bolt but do not tighten the bolt. Attach the nuts on the support straps for the fuel tank and tighten them to 22 ft.-lbs. Connect the fuel line to the fuel tank and tighten the fuel line connector to 29 ft.-lbs. Attach the electrical connectors for the fuel pump and fuel gauge.

5

Lower the vehicle with the jack and tighten the attaching bolt for the lateral rod between 58 and 72 ft.-lbs. Fill the fuel tank with fuel and reattach the cable for the negative terminal on the battery. Check the fuel system for leaks.

The 1983 Cadillac Eldorado featured an eight-cylinder 4.1-liltre engine with throttle body injection, or TBI. This type of fuel injection uses a low-pressure fuel pump to deliver fuel at a pressure of nine to 13 pounds per square inch. The fuel pump in the 1983 Cadillac is attached to the fuel tank, so a fuel pump replacement requires you to remove the fuel tank.

Instructions

1

Disconnect the negative terminal on the battery with a socket wrench, and open the filler door on the fuel tank. Detach the electrical wiring from the fuel-sending unit. Remove the cap on the pressure valve in the fuel line, and install G.M. tool no. J-5420 on the pressure valve. Wrap a shop towel around the valve, and tighten the tool to relieve the fuel pressure. Disconnect the tool, and replace the valve cap.

2

Raise the rear of the vehicle with a floor jack, and siphon as much fuel from the fuel tank as possible. Disconnect the screw that attaches the ground wire for the fuel pump to the cross member under the vehicle. Detach the fuel lines from the front of the fuel tank.

3

Place a wooden block on a jack stand, and support the fuel tank with the jack stand. Disconnect the screw on each side of the support straps for the fuel tank. Lower the jack stand slightly, and disconnect the electrical connector for the fuel pump. Lower the jack stand completely, and remove the fuel tank from the vehicle.

4

Disconnect the lock nuts that secure the electrical wiring for the fuel pump to the fuel gauge tank. Turn the locking ring on the fuel pump counter-clockwise with a punch and hammer. Detach the locking ring from the fuel pump, and remove the fuel pump from the fuel tank.

5

Install the new fuel pump by performing steps two through four in reverse order. Tighten the screws for the retaining straps on the fuel tank to 25 foot-pounds with a torque wrench. Connect the cable for the negative terminal on the battery with a socket wrench.

The Volvo 900 series is a line of mid-size cars produced from 1990 to 1997. The 1996 model was equipped with a 6-cylinder 2.9-liter engine. This vehicle used electronic fuel injection, which requires a high-pressure fuel pump. The fuel pump in a 1996 Volvo is located on top of the fuel tank and is accessible from the rear passenger compartment.

Instructions

1

Attach adapter 999-5484 to fuel drainage unit 981-2270 with the fuel drainage unit in the closed position. Remove the cap from the fuel pressure valve on the the fuel rail. Connect the adapter to the fuel pressure valve. Open the fuel drainage unit to relieve the pressure in the fuel pressure system.

2

Raise the vehicle with a floor jack and support it on jack stands. Remove the cap for the fuel filter valve and connect vent hose 999 5480 to the fuel filter valve. Drain fuel into a gasoline container for about 2 minutes. Disconnect the vent hose and replace the valve cap. Lower the vehicle and disconnect the fuel drainage unit from the fuel pressure valve. Replace the cap on the fuel pressure valve.

3

Disconnect the cable from the negative battery terminal with a socket wrench to avoid starting the engine. Pull back carpet over the right rear wheel in the rear passenger compartment. Disconnect the electrical connections for the fuel pump.

4

Disconnect the quick-connect fittings on the fuel lines to the fuel pump and detach the fuel lines. Turn the retaining nut for the fuel pump counterclockwise with tool 999-5485 to remove the retaining nut. Disconnect the fuel pump and rubber seal from the fuel tank.

5

Apply a thin layer of petroleum jelly to a new rubber seal, then install the rubber seal. Install the new fuel pump with the heater connection facing the right side of the vehicle. Tighten the retaining nut onto the fuel pump to 30 ft. lbs. with tool 999-5484 and a torque wrench.

6

Connect the electrical connectors and fuel lines to the fuel pump. Put the carpet in the passenger compartment back into place. Connect the negative battery cable with a socket wrench. Start the engine and check for fuel leaks.

The Mazda B-Series is a line of pickup trucks manufactured by Mazda Motor Corporation from 1961 to 2006. The number in the series indicates the engine displacement, so the Mazda B2200 has a 2.2-liter engine. This vehicle has a low-pressure fuel system, with a fuel pressure in the range of 2.8 to 3.6 pounds per square inch. The replacement of the fuel pump in the 1989 Mazda B2200 requires you to remove the fuel tank.

Instructions

1

Start the engine, and disconnect the electrical connect for the fuel pump. Wait for the engine to stall, and turn the ignition switch off.

2

Disconnect the cable on the batterys negative terminal with a socket wrench to prevent sparking. Loosen the filler cap for the fuel tank. Raise the vehicle with jack, and it on jack stands. Place a gasoline container under the drain plug with a socket wrench, and remove the drain plug. Drain the fuel tank into the gasoline container.

3

Disconnect all hoses from the fuel tank, and support the fuel tank with a jack. Remove the mounting nuts for the fuel tank with a socket wrench. Lower the fuel tank from the vehicle.

4

Clean the area around the fuel pump to prevent debris from entering the fuel tank while you replace the fuel pump. Remove the mounting screws for the fuel pump with a socket wrench, and detach the fuel pump from the fuel tank. Discard the old gasket on the fuel tank.

5

Place a new gasket into position on the fuel tank. Install the new fuel pump by performing steps 2 through 4 in reverse order. Fill the fuel tank with fuel, start the engine and check for leaks in the fuel system.

Duramax engines are eight-cylinder, 6.6-liter engines manufactured by General Motors. The LLY version was in production from 2004 to 2005, and is a common engine for full-size Chevrolet pickups. The fuel system for the Duramax LLY engine is highly-pressurized, and requires a regulator to maintain the correct pressure. The replacement procedure for the fuel pressure regulator is the same for all vehicles with a Duramax LLY engine.

Instructions

1

Disconnect the air intake pipe and alternator with a socket wrench. Detach the electrical connectors for the air conditioning clutch and air conditioning cut-out switch. Remove the mounting bolts for the air conditioning compressor, and push the compressor to the right of the engine.

2

Lift up the latches on the connectors for the main wiring harness on the engine, and release the clip on the harness to detach the connectors. Disconnect the connector from the barometric pressure sensor. Remove the mounting bolts on the bracket for the engine wiring harness with a socket wrench, and disconnect the bracket.

3

Disconnect the electrical connectors from the engine coolant temperature sensor, fuel temperature sensor, oil level sensor and fuel pressure regulator. Detach the water outlet tube from the engine. Release the clamps for the distribution block hoses, and disconnect the hoses. Disconnect the retaining bolts for the Exhaust Gas Recirculation (EGR) hose, and release the clamp on the hose so you can push it aside.

4

Clean the fuel pressure regulator and injection pump with solvent 12377981 and compressed air. Disconnect the screws on the fuel pressure regulator with a T25 TORX tool, and detach the fuel pressure regulator.

5

Coat the new O-rings for the fuel pressure regulator with clean engine oil, and mount them to the new fuel pressure regulator. Install the new fuel pressure regulator, and tighten its screws to 35 inch-pounds, with a T25 TORX tool. Tighten the screws for the fuel pressure regulator again to 62 inch-pounds.

6

Install the remaining components by performing steps 1 through 3 in reverse order. Tighten the mounting bolts for the EGR hose and the main engine wiring harness to 15 foot-pounds with a torque wrench. Tighten the bolts for the air conditioning compressor to 37 foot-pounds.

7

Crank the engine until it starts to prime the fuel system. Allow the engine to idle and check for fuel leaks.