Duramax Losing Prime!!! - Page 3 - Diesel Bombers



Chevy/GMC Truck and Duramax Turbo Diesel Forum Discussion of General Topics related to All Chevy and GMC Trucks as well as the Diesels in them

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  #21  
Old 03-25-2011, 01:11 AM
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Quote:
Originally Posted by bodyman36 View Post
what really aggrivated me is that even giving gm and the local parts stores both, the vin number both gm and the locals said oh there is a fuel pump module in the tank, and inspecting the wires to the unit there are two wires to it and im sure they are for a sending unit and no pump , even gm said they could send me a pump unit that went into the tank , how silly this is sorry but im a virgin with a duramax

two wires is for a rheostat, your fuel lever sensor.
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  #22  
Old 03-25-2011, 01:16 AM
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there is a few places that can cause a leak, on the bottom of the fuel filter there is like a 16 point plastic nut, that could be loose or not right enough. be careful though, it has plastic threads.

or the water drain valve, or the bleed screw not working right. hell even the fuel filter could not be on tight enough. loose lines, or schrader valve could cause leaks.

you can prime the system really good, and then get some soapy water and spray it all over the place and see if you can find leaks
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  #23  
Old 03-25-2011, 01:17 AM
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yes i figured as much on that but it was silly that even gm with the vin claimed it as a pump

---AutoMerged DoublePost---

i will try that in the am and return , thanks so much , ill have me or one of my crew recheck the fire dept work on this thing thansk

Last edited by bodyman36; 03-25-2011 at 01:17 AM. Reason: Automerged Doublepost
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  #24  
Old 03-25-2011, 01:19 AM
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where you located
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  #25  
Old 03-25-2011, 01:21 AM
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southern illinois
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  #26  
Old 03-25-2011, 01:22 AM
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another issue, soemtimes the fuel filter can be accidentally be missing gaskets, or double gaskets.
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  #27  
Old 03-25-2011, 01:23 AM
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i would also remove the edge too
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  #28  
Old 03-25-2011, 01:25 AM
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and pump that primer on top of the FF untill its rock hard
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  #29  
Old 03-25-2011, 01:27 AM
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yes i am aware of that as well ill be checking or one of the guys will in the am but i think the no start was before the filter was installed , then they tryed a filer
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  #30  
Old 03-25-2011, 01:30 AM
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hmm...

any smoke when trying to crank, or fuel smells?
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