Fuel problems Fuel pressure on a acura vigor

will be a code for misfires ( p 0300)
indicates fuel pressure too low for higher rpm than idler

Search Results

images for 92 Acura Vigor remove transmission


More images for 92 Acura Vigor remove transmission

Unfortunately you have to remove the fuel tank,the pump is in it. It isn't that hard to remove on a lift, and if it is close to empty, it might not be too hard on jack stands and a second support on both sides, at the very least.

misfires are from plugs, HT leads, injectors, low fuel pressure , compression problems,coil/s distributor cracks /dirty,rotor button ;loose, faulty ignition control module, loose earth/ground wires, low alternator out put, bad battery
I suggest that you run the fault codes to try to pinpoint the problem area.

REMOVAL & INSTALLATION

Print
The fuel pump on all models except the 1986-90 Integra, is located in the fuel tank. On the 1986-90 Integra the fuel pump is located under the rear of the vehicle, near the drivers side of the fuel tank.

PRESSURE TESTING

See Figure 1
On all models, the fuel pump should run for about 2 seconds when the ignition is first turned ON . By removing the filler cap and listening at the filler, it should be possible to hear the pump run each time the ignition is switched ON . It will then stop again until the starter is activated.

Fig. Fig. 1: Checking the fuel system pressure

1. Disconnect the negative battery cable and remove the fuel filler cap.
2. Relieve the fuel system pressure.
3. Remove the service bolt and attach a fuel pressure gauge to the top of the fuel filter.
4. Start the engine and measure the fuel pressure with the engine idling and vacuum hose to the pressure regulator disconnected;

1986-1989 Integra-35-41 psi. (240-279 kPa) 1990-93 Integra-37-44 psi. (255-304 kPa) 1989-90 Legend-36-41 psi. (250-279 kPa) 1991-93 Legend-38-46 psi. (265-314 kPa) Vigor-43-50 psi. (300-350 kPa)

1. Check to see that the pressure decreases when the vacuum hose is connected.
2. If the pressure is higher than specifications, check for a pinched or clogged fuel return hose or faulty pressure regulator.
3. If the pressure is lower than specifications, check for a clogged filter, defective pressure regulator or leakage in the fuel line.
4. After inspection, remove the pressure gauge and install the service bolt with a new washer.

REMOVAL & INSTALLATION

1986-1989 Integra

1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure.
3. Raise and safely support the vehicle and remove the left rear wheel.
4. Remove the fuel pump cover bolts and the cover.
5. Remove the fuel pump mount bolts and the fuel pump with it's mount.
6. Disconnect the fuel hoses and the electrical connectors.
7. Installation is the reverse of removal. Use new sealing washers when connecting the fuel hoses. After the pump is installed, turn the ignition switch ON and OFF a number of times to pressurize the system and check for leaks.

1990-93 Integra and Vigor
See Figures 2 and 3

1. On Integra, remove the rear seat and access panel and disconnect the wiring.
2. Remove the fuel tank.
3. Remove the pump flange mounting nuts and lift the pump out.
4. Installation is the reverse of removal. Use new sealing washers when connecting the fuel hoses. After the pump is installed, turn the ignition switch ON and OFF a number of times to pressurize the system and check for leaks.

Fig. Fig. 2: Removing the fuel pump access cover-Legend and Vigor

Fig. Fig. 3: Removing the fuel pump assembly-Legend and Vigor
Legend

1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure.
3. Remove the maintenance access cover in the luggage area.
4. Disconnect the fuel lines and the electrical connectors.
5. Remove the fuel pump from the fuel tank.
6. Installation is the reverse of removal. Use new sealing washers when connecting the fuel hoses. After the pump is installed, turn the ignition switch ON and OFF a number of times to pressurize the system and check for leaks.

white smoke usually means that your car is dumping raw fuel into the cylinder without burning off. You may have a bad injector or fuel pressure regulator.

YOU HAVE RELIEF FUEL PRESSURE BY REMOVING GAS CAP THEN LOOSEN SERVICE BOLT ON TOP OF FUEL FILTER ABOUT A TURN.WHEN FUEL PRESSURE RELEAVED.THE FUEL TANK HAS TO REMOVED IN ORDER TO REPLACE FUEL PUMP.

how long was it parked for/ may need fuel treatment and filter replacement.. recommend sea-foam for the tank.. 9 bucks at the parts store

the fuel pump is inside the gas tank.

YOUR PROBLEM IS EITHER A CLOGGED FUEL FILTER,BAD PUMP,OR FUEL PRESSURE REGULATOR,OR ALL THE ABOVE.TRY A FUEL FILTER FIRST AND A LITTLE FUEL SYSTEM CLEANER