Duramax Fuel Primer Rebuild | The Ultimate Guide to Fixing a Common Diesel Engine Problem

[@kyleburningham6733]

Thanks for the video. Followed all the steps and got everything fixed and it works perfect now!

[@dudewecanfixit]

That’s awesome! Glad you got it fixed!

[@crasher88]

Is there a way to check the low pressure fiel system to find other leaks? I am fighting a heat soak no start on an 07 lbz. After a very long prime it will start. I feel the fuel filter housing is a culprit but is it the only one? There is no visible external leaks but I know it's loosing prime but I can't figure out where the leak is at.

[@dudewecanfixit]

I'm not sure. You could pressurize the fuel tank and look for leaks

[@garrettgolden1038]

I have bought 2 of these whole assemblies that are leaking from the factory… I guess i need to get the rebuild kit and do this?!?

[@dudewecanfixitshorts]

Amazing video!

[@SemiproMotorsports]

Would you know if this problem would cause a crank but no start. Our truck only starts for like 30 seconds with quick start spray so we know its not the cp3 pump.

[@dudewecanfixit]

The primer should get firm when you pump it. If it doesn't or if it leaks fuel, that could be your problem

[@chadlbybee8109]

Just what i needed to know

[@dudewecanfixit]

Glad it was what you needed!

Does the 2021 have this primer pump? Have a cab and chassis and the filter was above the rear duelly axle. Thanks!

[@dudewecanfixit]

I am not familiar with how the 2021 model is set up

Thank!

[@brockstephens3271]

So I've got a small leak coming from the wire , it causes it to lose prim

[@dudewecanfixit]

That's definitely a problem. Might need to replace that part