Question about 1991 Chevrolet Corvette

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FUEL SEEPING OUT

CAR WILL NOT STAY RUNNING FOR MORE THAN 2 SECONDS. FUEL KEEPS SEEPING OUT OF INTAKE WHILE CAR IS OFF AND KEYLESS

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Explain this problem a little more will help in proper solution. Is this fuel injected or carbureted. Can you hear fuel pump kick on when you turn key. Sounds to me like the fuel pump never shuts off if you have gas always coming out. Could be bad pump or the wiring going to the pump but i'm not sure because i don't know what type of fuel delivery you have.

Posted on Apr 18, 2014

Testimonial: "Robert it us fuel injected. tuned port injection. do not hear or know if I hear fuel pump turn on"

  • MARIO ROBERTS PINEDA
    MARIO ROBERTS PINEDA Apr 23, 2014

    ROBERT, I TOOK OUT THE FUEL PUMP OUT IS THERE A WAY TO CHECK IT MAYBE AUTO PARTS STORE? AND WHERE IS REGULATOR LOCATED? THANKS AGAIN

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Engine cranks, runs for 1 or 2 seconds and then stops.


Two items to check. The crankshaft sensor will reduce fuel pump pressure if it miscounts the RPM. The plastic strainer in the fuel tank can break apart and clog the pump intake in the tank. When the engine quits, the fuel pump is stopped and the loose particles are returned to the tank bottom.

In either case, try checking the fuel pressure at the test tap on the fuelrail.

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93 toyota pickup 4x4 it will stay running after I turn it on to start it up, it starts up then after a few seconds it kills


if I'm reading this right...
... the engine starts and dies within a few seconds.
... you jumpered the fuel pump test connector and it will keep running.
... you smell fuel after trying to re-start when it dies.

Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.

Buy a can of starting fluid and have someone start the engine then spray short bursts of the fluid around all the intake fittings. If spraying the fluid in any particular area keeps the engine running, I'd start looking for leaks around that area.


It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.it will keep running.

... you smell fuel after trying to re-start when it dies.


Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.


Buy a can of starting fluid and have someone start the engine then spray short bursts of the fluid around all the intake fittings. If spraying the fluid in any particular area keeps the engine running, I'd start looking for leaks around that area.


It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.

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check fuel pressure, should be 40 psi.
try 2 things

spray starting fluid in air intake to see if it will stay running. It's fue then.

Try turning key to on nd wait 5 seconds for system to build pressure and pump to shut off. Turn key off, wait for relay clcik noise or 10 seconds. then turn key to ON again and wait 5 seconds to build pressure again. Then start engine. If it starts better, you have a bad check valve in the fuel pump or a bad pressure regulator on the fuel rail (unlikely).

report back

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1 Answer

No fuel delivery from the Brand new fuel pump and filter. 1988 Ol


The pump is only suppose to run for 3 seconds if the engine is off. It will only stay pumping if the engine is running so the circuitry seems to be just fine. You prabably just got a bad pump again. Its common for repair shop to put 2, 3, and 4 pumps sometimes before they get one that works. We find it very common that a gauge will malfunction and the real problem is you just ran out of gas.

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Wont stay running


hi, i need to know something about your car in order to help you.
does your car have a distributor or 2 coil packs under the manifold.
there is 2 different problems.
i think your prob is your fuel pump breaking down under load, its common, get back to me 1st with my question before u do anything.

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Still sounds fuel related to me. Getting minimal fuel enough to start & or rev, but not maintaining proper pressure required. Try this. Get a can of WD-40 ready, remove air intake hose at throttle body. Start car & when it starts to begin to die, spray some WD-40 into front of throttle body & see if engine continues to run, as long as you keep giving it squirts of 1-2 seconds. If it does, change fuel filter first, but be prepared to do pump too. If you can get a fuel pressure test done on it, that would be even better. Let me know what happens.

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Car won't stay started


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