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2004 CHEVROLET FUEL PRESSURE

  • Tiny
  • dozer1401
  • 2004 Chevrolet

Engine Mechanical problem
2004 Other Chevrolet Models V8 Four Wheel Drive Automatic 120000 miles

I have a 2004 Dura Max 6.5 deisel with the Allison trans. I can not get it to hold its fuel prime, Ive changed out the fuel filter with new O rings on the filter, and used the onborad manual fuel prime pump, but still cant get it to hold its prime, once its started, it only runs a few minutes and its back to primeing again. Any ideas?

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Sunday, June 20th, 2010 AT 8:59 PM

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  • Tiny
  • hmac300
  • Expert
  • 44,341 posts

Hopefully you filled the fuel filter before you installed it. You aer supposed to pump the hand pump 30 times then let it sit for a couple of minutes. Then Pump 30 more times and let sit. See if truck will start and let idle for 10 minutes it will take that long for the air to work out of the system. If it won't idle that long then you have air leaking in the system or a vacuum leak and should be checked by a pro.

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Saturday, July 10th, 2010 AT 7:03 PM

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