No fuel

Asked by Keith Jul 14, 2016 at 12:52 PM about the 1997 GMC Yukon SLE 4WD

Question type: Maintenance & Repair

Pump is turning on will run
if i pour gas into throttle
body loosened fuel filter
fuel comes out when i turn
key on for few seconds
then stops

3 Answers
189,455

Paul answered 8 years ago

Even though you have fuel coming out, it doesn't men you have the correct pressure going to the injectors. You will need to check your pressure at the rails...I think it should be about 35 PSI..

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65,510

firebird338 answered 8 years ago

Also check to see if injectors are getting power with a noid light.

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61,205

Andrew answered 8 years ago

You need 55 psi to run. Anything under 50 psi won't fire the injectors. Get a fuel pressure gauge and use the test port on the fuel lines. It's towards the rear drivers idea of the engine bay. This truck has the Spider injectors it's difficult to use a noid light. Typically if you have spark on these engines you have fuel pulse too.

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