Originally Posted by
westerncorvette
So we got our truck running good but one issue we encoutered was that we keep having to prime the system to get it to fire. It seems like its draining back into the tank. Once its running it runs fine.
Any thoughts? Should there be a checkvalve somewhere as there wasnt one in the 02 Duramax fuel sending unit we installed.
Thanks
Les
I would check the 5 rubber fuel lines on the engine and the fuel primer in the top of the fuel filter head. There isan O-ring that seals the base of teh primer pump that is known to cause air leaks and extended crank times.
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, 3.42 gears, 261 T-case
Trans has a mild build with ALOT of help from MIKE L. which included ALTO's for C1-C4 and a PI ML converter
DIAMONDEYE 4" exhaust with a CORSA muffler, AFE stage 1 dry filter, EFILIVE, KENNEDY single pump and pump rub kit.