Priming Pump/Filter Housing. Truck won't start: Chevy Duramax
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Priming Pump/Filter Housing. Truck won't start: Chevy Duramax

  1. #1
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    Default Priming Pump/Filter Housing. Truck won't start: Chevy Duramax

    Did a search and still was not comfortable with the results if found.
    I was ready to leave for a trip a couple of days ago. My batteries were low from not using the truck for about a month, so I jumped it. The fuel level was low and I was parked nose forward on a decline (i have a aftermaket OEM replaced gas tank 50 gallons). The truck would turn but not bite, so I checked and primed until it pissed. Still didn't turn over, so I assumed the level was too low, put about 10 gallons of diesel in and went to prime and no pee of out of the vent screw. I assume it's either the prime pump or the filter housing that is bad. Before I spend the money on one ($84 online at GMpartsdirect) is there anything else I should check? My DIC says i was at 10% life of the fuel filter, but if it's not priming, i don't think the filter has anything to do with that correct? I also removed the fuel filter, filled it with diesel and still would not prime. Thanks guys for any help you can give me.

    This is for a 2005 Duramax lly motor
    Last edited by Bear Down; 10-18-2010 at 11:39 AM.

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  3. #2
    Senior Member shan's Avatar
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    Quote Originally Posted by Bear Down View Post
    Did a search and still was not comfortable with the results if found.
    I was ready to leave for a trip a couple of days ago. My batteries were low from not using the truck for about a month, so I jumped it. The fuel level was low and I was parked nose forward on a decline (i have a aftermaket OEM replaced gas tank 50 gallons). The truck would turn but not bite, so I checked and primed until it pissed. Still didn't turn over, so I assumed the level was too low, put about 10 gallons of diesel in and went to prime and no pee of out of the vent screw. I assume it's either the prime pump or the filter housing that is bad. Before I spend the money on one ($84 online at GMpartsdirect) is there anything else I should check? My DIC says i was at 10% life of the fuel filter, but if it's not priming, i don't think the filter has anything to do with that correct? I also removed the fuel filter, filled it with diesel and still would not prime. Thanks guys for any help you can give me.

    This is for a 2005 Duramax lly motor
    Verify the oring around the bleed in the filter housing isn't leaking. After you get liquid out of the bleed, close it and continue to pump it until you can't compress it.
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  4. #3
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    I have pumped that little bastard till my arm almost fell off. It just won't spit the fuel. I have tried it with the bleeder screw closed and open, no luck. I have done it before and it never take a lot of pumps. I pumped over 100 times with each situation. It just feels that there is no suction at all. I just want to eliminate all scenarios before I buy the filter housing.

  5. #4
    AKA Blownjet 468 Blowncat 509's Avatar
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    ditch the factory filter housing, and look into an auxillary lift pump/ filter
    combo. you will be pleasantly suprised at the power increase.
    I did this to an 04.5 lly, along with a 3.0' aftermarket downpipe, egr blocker, pcv reroute, and of course an edge evolution tuner, and the lbz
    turbo mouthpiece. what a difference! just make sure the filter is 5micron!

  6. #5
    Senior Member JakeC.'s Avatar
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    i have replaced a quite a few filter housings/primers for the primer pump not working. if you have the bleeder screw open and have fuel in the tank like you say you do, there shouldnt be any reason why your not getting fuel out of it when pumping it. i would say the primer pump is done for.

  7. #6
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    The problem is fixed. It was the filter housing (primer pump)M once installed it pee'd right away! Bled the system and fired right up, had tons of air in the lines. Cost me 150 bucks for the part, couple of bruised knucks and a sore back and she is ready!M bummer we missed a havasi trip over this but I figured it was for a reason. God I hate those clips they use for the hose that attaches to the housing!

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