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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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1988 chev caprice 305 tbi runs ruff, new fuel pump, egr,

Customer Question

1988 chev caprice 305 tbi runs ruff, new fuel pump, egr, spark plugs, wires good, one new injector, new vale job, when you sweeze off return line it runs great, what is the problem.
Submitted: 9 months ago.
Category: Chevy
Expert:  Roy replied 9 months ago.

good morning my name is ***** ***** I will assist

by doing that, you increased the duel pressure. you need to check the actual fuel pressure. you may have a failing fuel pump delivering low pressure. you can rent a tester at a parts store to verify.

Roy

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