Acura Coupes and Sedans 1994-2000 Repair Information

General Information


The fuel system includes such components as a fuel tank, lines, in-tank high pressure fuel pump, PGM-FI main relay, filter, pressure regulator, injectors, and fuel pulsation dampener. This style fuel injection system delivers pressurized fuel to the injectors with the engine ON and cuts that fuel delivery when the engine is turned OFF .

Acura prides itself in being a technologically advanced automobile manufacturer. This is seen in various aspects of the company's design philosophy, and the fuel injection system was not an area to be left out. For example, on the Integra GS-R models, the fuel injectors were altered by a mere eight degrees from their previous design. This was done to position the injectors directly at the center of the intake valves to further enhance the vaporization of the sprayed fuel with the incoming air. This reduced fuel condensation on the intake walls and improved driveability as well as throttle response. As you can see, the fuel injection system was carefully designed and tested. Therefore use caution and common sense when disconnecting and reinstalling fuel system components. Precision and accuracy count!


Safety is an important factor when servicing the fuel system. Failure to conduct maintenance and repairs in a safe manner may result in serious personal injury. Maintenance and testing of the vehicle's fuel system components can be accomplished safely and effectively by adhering to the following rules and guidelines.

To avoid the possibility of fire and personal injury, always disconnect the negative battery cable unless the repair or test procedure requires that battery voltage be applied.
Always relieve the fuel system pressure prior to disconnecting any fuel system component (injector, fuel rail, pressure regulator, etc.), fitting or fuel line connection. Exercise extreme caution whenever relieving fuel system pressure to avoid exposing skin, face and eyes to fuel spray. Please be advised that fuel under pressure may penetrate the skin or any part of the body that it contacts.
Always place a shop towel or cloth around the fitting or connection prior to loosening to absorb any excess fuel due to spillage. Ensure that all fuel spillage is quickly removed from engine surfaces. Ensure that all fuel soaked cloths or towels are deposited into a suitable waste container.
Always keep a dry chemical (Class B) fire extinguisher near the work area.
Do not allow fuel spray or fuel vapors to come into contact with a spark or open flame.
Always use a backup wrench when loosening and tightening fuel line connection fittings. This will prevent unnecessary stress and torsion to fuel line piping. Always follow the proper torque specifications.
Always replace worn fuel fitting O-rings. Do not substitute fuel hose where fuel pipe is installed.