How to Replace a Fuel Pump in a Nissan Sentraby Contributor
The Nissan Sentra fuel pump is electric so you should check its fuses and relays before looking at the fuel pump itself. If your fuel tank is not empty but your engine is still having trouble getting fuel, you may need to clean or replace your fuel pump The Nissan Sentra's variety of styles and trim levels may determine the replacement fuel pump you choose.
Choose a new fuel pump for your Nissan Sentra. This will require you to know the make and model, engine size and engine type. Models made from 1982 to 1986 may have a 1.5 L, 1.6 L or 1.7 L diesel engine and 1986 to 1990 use 1.6 L engines. Models made from 1991 to 1994 may have a 1.4 L, 1.6 L or 2.0 L engine.
Look at later versions of the Nissan Sentra. Models manufactured from 1995 to 1999 may have a 1.6 L or 2.0 L engine, and engine sizes for 2000 to 2006 models are 1.8 L, 2.5 L and 2.0 L. The current generation debuted in 2007 and is available with a 2.0 L MR20DE engine.
Prepare your vehicle for fuel pump servicing. Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench.
Lift up the rear seat and open the inspection cover under the rear seat. Disconnect the send and return fuel lines from the fuel pump and unplug the electrical connections from the fuel gauge and pump.
Remove the six mounting bolts from the fuel pump assembly and raise it out of the fuel tank. Discard the O-ring seal or gasket.
Install the new fuel pump using the items included in the kit, especially the O-ring seal or gasket. You should also replace the fuel hoses and clamps at this time. Tighten the mounting bolts on the fuel pump to between 18 and 22 in. lbs. with a torque wrench.