ok, installed a used vp44 in my 99 and i have a leak somewhere what appears to be behind the support bracket for the pump.

i have made sure that all lines are tight. it is fine until the lp starts working, ie... crank the truck for a few secs, shut off, lp comes on....shortly there after fuel starts dumping out


any ideas, desperate here

 

any idea why the lp wont stop running? is there a relay or something to them. it was supposedly replaced by Cummins

 

When you crank the truck and it doesn't start the lift pump will run for 30 seconds in some case. I can't tell you why?

 

it runs for alot longer then that...i did drain a small bit of fuel out ....recranked and now it just runs....before it was running then leaking, now it just runs but no leaks

 

anyone?? anyone?



bueller?? bueller?

 

Could the fuel return line have become brittle with age and cracked during the Transplant?
I understand that's not all that uncommon.