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Hard to start

Tiny
BOFOLTON2
  • MEMBER
  • 2002 CHEVROLET VENTURE
  • 155,000 MILES
2002 chevy venture, hard to start, have to cycle key 2 or 3 times, fuel pressure reg replaced, maf replaced, map replaced, cam and crank sensor replaced, ignition coil replaced fuel filter replaced, pcv replaced, no problem w pk3, no vacuum leak (smoke test performed) good battery and overall voltage, but fuel pressure only shows 20 psi (switch on, and running) and as soon I shut down the engine drops to 0 immediately, no gas smell, no shorted ground only one code P0171 b1 lean condition O2 sensors ok. Any suggestion?.
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Wednesday, February 24th, 2016 AT 3:31 PM

5 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I see all these parts replaced and no fuel pump. With that fuel pressure that probably should have been the first thing you looked at.
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Wednesday, February 24th, 2016 AT 4:45 PM
Tiny
BOFOLTON2
  • MEMBER
  • 3 POSTS
I suspect is maybe the fuel pump check valve, because pressure drops quickly to 0 after engine shutdown, what you think?Any suggestion beyond?
Thanks. Alex
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Wednesday, February 24th, 2016 AT 4:56 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Yes, the check valve is one of the problems it has but that's not causing the low pressure. The pump itself is likely the cause there.
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Wednesday, February 24th, 2016 AT 4:59 PM
Tiny
BOFOLTON2
  • MEMBER
  • 3 POSTS
Yes.I will replace the pump next Saturday. Thanks a lot. For your attention. Alex
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Wednesday, February 24th, 2016 AT 5:01 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,665 POSTS
Let us know what happens so you can help others, the fuel pump was the call in my book :-)
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Monday, March 7th, 2016 AT 4:43 PM

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