Monday, May 12, 2014
How to Replace the Fuel Pump in a 1990 Honda Accord
The Accord is a mid-size car manufactured by Honda since 1976 and is still in production as of 2010. The 1990 model has a four-cylinder, 2.2L engine with electronic fuel injection. This requires the fuel pump to deliver fuel to the injectors under high pressure. The fuel pump in the 1990 Honda Accord attaches directly to the fuel tank, so you must disconnect the fuel tank to replace the fuel pump.
Instructions
- 1
Disconnect the cable to the negative terminal of the battery with a socket wrench, and loosen the filler cap for the fuel tank. Locate the fuel pressure release valve on the fuel rail. Hold the banjo bolt for the release valve with a 6 mm closed wrench. Wrap a shop rag around the service bolt on top of the banjo bolt. Loosen the service bolt by one complete turn with an open-end wrench to relieve the pressure in the fuel system. Tighten the service bolt to 9 foot-pounds with a torque wrench.
2Block the front wheels and raise the rear of the vehicle on jack stands. Loosen the drain bolt of the fuel tank and drain the fuel into a container approved for gasoline. Slide the clamps on the fuel hoses back and disconnect the fuel hoses from the fuel tank. Support the fuel tank with a floor jack and remove the nuts on the fuel tank retaining straps with a socket wrench. Lower the floor jack and remove the fuel tank from the vehicle. Disconnect the mounting bolts for the fuel pump with a socket wrench and remove the fuel pump from the fuel tank.
3Install the new fuel pump onto the fuel tank ensuring that you seat it into its proper position. Tighten the mounting bolts evenly to a torque of 48 inch-pounds with a torque wrench. Connect the fuel tank and tighten the nuts on the restraining strap to 27 foot-pounds with a torque wrench.
4Remove the service bolt on the fuel pressure regulator on the fuel rail. Disconnect the hose from the fuel pressure regulator and plug the open end of the hose. Attach a fuel pressure gauge to the pressure regulator.
5Start the engine and note the reading on the fuel pressure gauge while the engine is idling. The fuel pressure in a 1990 Honda Accord should be in the range of 36 to 41 psi. Check for a clogged or pinched fuel return hose if the pressure is too high. Look for leaks in the fuel line, a faulty pressure regulator or a clogged fuel filter if the pressure is too low.
6Wrap a shop rag around the fitting for the pressure gauge. Loosen the fitting slowly, until you can remove the pressure gauge. Place new washers on the service bolt and tighten it to 9 foot-pounds with a torque wrench.
