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Losing Prime In Duramax

shaper

By shaper
in Ask A GM Technician

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shaper Enthusiast

shaper

Posted
Posted

I have a 2003 2500HD Duramax, I had been having a hard start problem until I had 2 glow plugs replaced under warranty at the dealer. The morning after picking it up from the dealer it wouldn't start. I primed the fuel filter(which is brand new, replaced at dealer) and bled off the air, the truck fired right up. Now the truck is fine for the next 4-5 days and it happens again, pump and bleed at the filter again truck starts

 

Today the truck started immediately ran for 2-3 seconds and stalled. I had to pump and bleed again.

 

The truck has 84,000 miles

 

Any thoughts on what this could be?

 

Thanks

RGT New Member

RGT

Posted
Posted

There is a "redo" on the injectors. Bring it into your favorite GM dealer and have them check and see if your vehicle qualifies for the rebuild. I had mine done a couple years ago. P.S. replace the engine oil right after the injectors are replaced as the leaky diesel finds its way into the crank case causing premature breakdown of the oil leading to premature engine wear. Do not put this off!

Hope this helps.

 

Richard

 

I have a 2003 2500HD Duramax, I had been having a hard start problem until I had 2 glow plugs replaced under warranty at the dealer. The morning after picking it up from the dealer it wouldn't start. I primed the fuel filter(which is brand new, replaced at dealer) and bled off the air, the truck fired right up. Now the truck is fine for the next 4-5 days and it happens again, pump and bleed at the filter again truck starts

 

Today the truck started immediately ran for 2-3 seconds and stalled. I had to pump and bleed again.

 

The truck has 84,000 miles

 

Any thoughts on what this could be?

 

Thanks

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