C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1989 Vette - Fuel System problem

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Old Jul 25, 2012 | 03:10 PM
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glewis954
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From: Dania Beach Florida
Default 1989 Vette - Fuel System problem

I am checking the feed line before injector rails - when I turn the power on (But not start the car) I get a stream of fuel - about 2 - 3 seconds.. Is the this ok.. Or should the fuel be a pumping out in a continuous stream with the power on but not having the engine on??

Also I have checked the fuel pressure and it is about 20 - 25 psi.. I have changed the pump unit and fuel filter???

Can the injectors be causing the psi to be low at the rails??? Should I use a Injector cleaning system to
Clean the injectors
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Old Jul 25, 2012 | 03:15 PM
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Pump will only run for 2-3 seconds, unless engine is running. Your pressure is way too low.
Does the car run ?
Is that pressure with engine running or just ignition turned to run ?
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Old Jul 25, 2012 | 04:17 PM
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glewis954's Avatar
glewis954
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Default 1989 Vette - Fuel System problem

This is with the car running.. When it runs in cold start - will run over
but will stop and if it does run it will run for a min to serveral mins and
than shut off... I was think it was the fuel as it will be run and then it stop. Please note this car has been down for years...
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