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2001 GMC Safari stopped running and fuel coming out of muffler

Tiny
2CP-ARCHIVES
  • MEMBER
  • 2001 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 103,000 MILES
2001 GMC Safari mileage: 103,000. My GMC Safari stopped running. After going through the whole fuel system I found that the fuel pump was bad. I had only forty psi. When I replaced the pump the van started right up. The pump gave me sixty psi then the van stopped again, no fuel pressure at all. I can hear the pump running. I climbed under the van to see if it was leaking, I found I had fuel coming from my muffler. Can you tell me what happened and how to fix it?

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Monday, January 10th, 2011 AT 9:22 PM

1 Reply

Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
It appears that the fuel pressure regulator diaphragm has failed, dumping raw fuel into the engine. Another possibility is that a fuel injector stuck open. Replacing the faulty part should fix your problem.
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Monday, January 10th, 2011 AT 9:30 PM

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