Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

keeps losing prime?!?

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  #1  
Old 08-15-2011, 08:26 AM
ebarresi5894's Avatar
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Default keeps losing prime?!?

hi, i have a 95 2500 6.5L TD VIN F.
i did the fuel filter a few days ago, read how to do it (fill bowl, let it purge etc)

it ran fine, then the next morning it ran for 30 secs and died. re purged it and it ran all day if i didnt shut it off. let it sit for 2 hours and did the same thing.

proper way to bleed or idk?!?

thanks in advance guys
 
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Old 08-17-2011, 11:07 AM
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If you are still loosing prime you have leak or sucking air from some where

After running all day or just few mins it should prime it self

Look in the engine valley but fuel housing see if there fuel in the valley
 
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Old 08-19-2011, 02:24 PM
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In my case the problem was the fuel shut off solenoid. Not only it was losing prime, it was also leaking when idling; the leaking diesel ends up dripping from the hole in the transmission bellhousing. New FSOS fixed that.
 
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Old 08-21-2011, 12:26 PM
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i put a new lift pump in, and it helped, yet it was still doing the same thing.

idk if its primed the wrong way or what, but i also found a leak in the fuel lines, that i fixed. it runs great, esp, with the new turbo-master that i got

except when i punched it it started bucking, farting and wanted to die, and it took about 30 secs of idling before i could drive it normal again.

WTF COULD THAT BE?!?

the pmd had been moved, new lift pump, new fuel filter, idk what to do
 
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Old 08-21-2011, 03:32 PM
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what is your Boost running at

Did take the PMD of IP and if so how many miles on PMD and are you getting any codes
 
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Old 08-21-2011, 04:44 PM
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nope im not getting any codes, and the pmd is on the firewall

---AutoMerged DoublePost---

and i have the boost set to 5-7psi w/ the turbo-master at 2.5".

but it has been doing this for a while..
 

Last edited by ebarresi5894; 08-21-2011 at 04:44 PM. Reason: Automerged Doublepost
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