A fuel pump provides refreshment for your automobile. It supplies its injection action with the "nourishment"---or fuel---needed to function efficiently. That is why a malfunctioning fuel pump Testament slowly starve your vehicle, causing it to point dead in its tracks. Proceed from a unusual intelligible steps to test and spending money your vehivle's fuel pump.
Instructions
1. Fix the fuel pump. In newer vehicles, the pump is in the fuel tank. An older vehicle's pump is affixed to the engine or the frame rail linking the fuel tank and the engine.
2. Release the fuel pressure by first finding your car's fuel box and fuel-pump fuse. In some cases, a relay operates the fuel pump instead of a fuse. With the vehicle running, remove the fuse (or relay) to disengage the engine. This prevents the fuel lines from becoming pressurized when the fuel filter's fittings are cracked.
3. Disengage the negative battery cable. Hoist the vehicle up on jack stands and locate the fuel pump by looking beneath the car. It will be mounted within the gas tank or on the car's underside in front of the fuel tank, often insulated within a black "sleeve." Remove a mounted fuel pump from within the car. An in-tank pump must be accessed from beneath either the rear seat or the trunk's carpet and access panel.
4.7. Reconnect or reinstall all of the items involved in the fuel-pump removal process. Lower the vehicle and reconnect the battery cable. Start the engine to be sure the pump is working properly.
5. Detach the positive and ground wires. Pay attention to the connections before disengaging so you'll know how they reconnect. Extract the fuel pump. Use a clean rag to wipe away any grime or debris. Avoid letting any dirt or gasket material fall into the gas tank.
6. Check to see that the new fuel pump is set up similarly to the one being replaced. Secure fittings with copper washers and a line wrench.
Disconnect the in-tank pump's single fuel line located on top of the pump. Under-car pumps require disconnecting the "line-in" and "line-out" (also known as the high and low pressure sides). This calls for releasing any hose clamps or fittings and removing the fuel line. Capture any gasoline that may leak from the line to avoid a fire hazard.
