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I have a 99 chevy s-10 pick up, 4.3 liter v6. I'm having a hard start problem.
I have changed the plugs, wires, and cap. seems like a fuel problem. When I turn the key on
I can hear the pump,which stops after a few seconds. I also have noticed that when I turn the key off I can hear the fuel going back into the tank. I do not know what the fuel pressure is. After turning the engine over many times it will start, and seems to run just fine. When I turn it off and try again it will usually start rite back up, if it sits then I have the problem all over again. Does any know what is causing this problem and how to fix it.
Thanks

Submitted: 62 days and 6 hours ago.

Category: Chevy

Value: $15

Status: AWAITING CUSTOMER ACTION

Year : 1999
Make : Chevrolet
Model : S-10
Engine : 4.3L V6

Accepted Answer

The fuel pump usually causes this problem, the problem is that the fuel pump will not make enough pressure for the first few cycles of the key.

Accepts:
Expert:	zzdaryl
Pos. Feedback:	99.6 %
Answered:	9/20/2009

Chevy Technician

26 Years of working in a multi model garage.

62 days and 6 hours ago.

Reply

My fuel pump is fairly new, about 1.5 years old. I don,t want to have to pay for another one if I can avoid it, Is there any other possible thing it might be. I have checked for pressure at the schader test valve, and no fuel is under pressure after it's been sitting for a while.

Accepted Answer

WIth these symptoms it is most likely a fuel pump or pressure regulator but since it eventually starts it is not likely the regulator, I would start by checking the actual pressure.

Accepts:
Expert:	zzdaryl
Pos. Feedback:	99.6 %
Answered:	9/20/2009

Chevy Technician

26 Years of working in a multi model garage.

62 days and 5 hours ago.

Reply

Thank you. I will.

Posted by zzdaryl 62 days and 5 hours ago.

Answer

Thank you and good luck with the repair

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Optional Information

Year : 1999Make : ChevroletModel : S-10Engine : 4.3L V6

Accepted Answer

The fuel pump usually causes this problem, the problem is that the fuel pump will not make enough pressure for the first few cycles of the key.

Reply

My fuel pump is fairly new, about 1.5 years old. I don,t want to have to pay for another one if I can avoid it, Is there any other possible thing it might be. I have checked for pressure at the schader test valve, and no fuel is under pressure after it's been sitting for a while.

Accepted Answer

WIth these symptoms it is most likely a fuel pump or pressure regulator but since it eventually starts it is not likely the regulator, I would start by checking the actual pressure.

Reply

Thank you. I will.

Answer

Thank you and good luck with the repair

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Year : 1999
Make : Chevrolet
Model : S-10
Engine : 4.3L V6