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Dan
Dan, Technician
Category: Car
Satisfied Customers: 24584
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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chev tahoa: 99 tahao van 5.7 motor.... fuel pressure 55 psi

Customer Question

99 tahao van 5.7 motor.... fuel pressure 55 psi to top of carb, if u pour gas into carb engine will run but stops
Submitted: 4 years ago.
Category: Car
Expert:  Dan replied 4 years ago.
Hello, my name is Dan and I'm here to help get your problem solved. Fuel pressure needs to be at least 60 psi key on engine off, the 5psi difference will not allow it to start. Replace the filter to see if that helps if not problem is either fuel pressure regulator or pump. Test pressure at filter if good replace regulator, if low replace pump. Let me know if you have more questions or if there is anything else at all I can do to help. Thanks.
Customer: replied 4 years ago.

the pressure is 62 on start drops to 58 after initially starting, have changed the fuel filter.... where is the fuel pressure regulator?

Expert:  Dan replied 4 years ago.
It is under the upper intake manifold, let me know if you would like replacement instructions or have more questions. Thanks Mike.
Customer: replied 4 years ago.

yes please give me directions, I have no pics in my repair book (alldata)

Expert:  Dan replied 4 years ago.
alldata uses manufacture instructions so I'd have the same thing. It does have pictures, you just need to look up each component separately. Let me know if ou have more questions. Thanks Mike.
Customer: replied 4 years ago.


be back in a hour I have a doc appointment

Expert:  Dan replied 4 years ago.

No problem, thanks.

Customer: replied 4 years ago.

cannot find anything on procedures for finding or replacing the fuel pressure regulator

Expert:  Dan replied 4 years ago.

Here are instructions for regulator, then you can use instructions from your manual for upper intake. Let me know if you have more questions, thanks.

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https://db.tt/lBSxG4UA

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