Chevy and GMC Duramax Diesel Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter #1
So my truck started not holding prime, after some investigating I came to the conclusion it was the filter head assembly as it was still the stock unit. Replaced it and the lines and all was well for a couple days then the truck wouldn't start again. Now it won't hold prime at all and is sitting in my yard dead. New to these trucks, where should I start looking next?
 

·
Premium Member
Joined
·
9,817 Posts
Check for fuel leaks by applying a low air pressure to the tank filler neck, these trucks in the stock form pull fuel from the tank to the engine under a vacuum and a leak will suck air and doesn't show fuel. You will need someone to help look for a leak while applying pressure. This is why most add a lift pump to the fuel system to provide positive fuel pressure to the engines CP3 injector pump.
 
1 - 3 of 3 Posts
Top