Fuel pump

[Tonyo1242]

Good morning ..... I have a 2005 Chevy duramax 2500hd diesel 6.6 and I've noticed lately it began rolling over longer before it starts, now it won't start at all... I loosen the screw in on the primer assembly and check but it doesn't have any fuel coming to it, only air when I pump the primer ball.... Do you have any idea what that can be? Does this truck have a pump In tank that sends fuel to the engine?




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[Rancelot211]

Pump it with screw shut crack open and let air out. Close it and repeat

 

[Rancelot211]

Then pump till it's hard.

 

[Tonyo1242]

Ok I will try that again.... When I pumped it the first time I wasn't getting any fuel to it and I have a full tank of diesel


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[Tonyo1242]

Thank you


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[skintback]

No there is not a pusher/lift pump on the duramax pickup. More than likely it's the fuel filter head needing rebuilt or replaced that should take care of your problem

 

[Tonyo1242]

Ok thank you..... Is it easier to rebuild or change completely? I'm not a mechanic but I work with my hands a little


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[JoshH]

It's easier to install a new one, but it's cheaper to rebuild it. It could also be a fuel filter or water in fuel sensor problem or a line somewhere causing a problem.

 

[Awenta]

Don't go changing it if you don't know that's it for sure. There's a lot of places you can lose prime.

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[Tonyo1242]

Wow! Ok thank you


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[skintback]

If it has the original fuel filter housing on it I would replace the whole thing gm#12642623 there about 120 bucks at the dealer comes complete with filter and all it will not be a waste of money 2 bolts hold it to the valve cover 2 hose hookups heater plug in water in fuel plug in wires. I would do that way before you payed someone to even look at it :thumb:

 

[Tonyo1242]

Ok, that makes sense.... I'll order one and try it. I appreciate your help


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[Tonyo1242]

I drained the filter from the screw below and I got a lot of water coming out from the filter! I took the filter off and emptied it on the ground and a lot of water and jelly looking stuff came from the filter. Could my problem still be the primer assembly?


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[Awenta]

Have you ever changed it?

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[Tonyo1242]

Yes I changed the filter before..... It had that same type of stuff in it. I never change the primer assembly


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[Tonyo1242]

I changed the fuel filter assembly and the problem was solved..... Thanks everyone!


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[Rancelot211]

Change filter more often. I change mine every second oil change. Good insurance and always use delco filters unless you have a lift pump!

 

[c20elephant]

The ACDelco changed part numbers awhile back from the TP3012 to TP3018 along with internal changes, the Parker/Racor PFF50216 is a better choice. I ran 20,000 miles just short of 2 years when I replaced my filter.