micjester

I have an issue that is stumping me and I'd like to see if there's something simple I may be missing

New to me 08 Z06. Installed new Lingenfelter pump with some other mods, had it tuned and then put maybe 30 miles on it...ran fine. Then (same day) start the car, moves 4 feet and dies. Has zero fuel pressure at the rail. I can hear the pump come on, no pressure at all. Tank level shows 1/2 tank, but I threw another 5 gallons in it (just in case bad level reading) and still nothing. Any suggestions would be appreciated. I'm really not looking forward to dropping the tank again... I just don't see how the pump can work and have no pressure?

ss2z06

If the pump is actually coming on but no fuel the lines may be wrong inside or outside the tank. (Or kinked)

Unreal

Actually very easy for pump to run and have no pressure. There are a ton of little connections, lines, orings in the tank The transfer lines, etc all have to seal properly, or it will just pump fuel out of them and you will have no pressure.

3X2

Sounds like the crossover tube is either missing o-rings or one or more nipples on it are broken off.

spartan8270

+1 on an O-ring

micjester

It just seems weird that it was fine after install (30ish miles) and then all of the sudden quit. After it was installed pressure was checked and it was 58 and had no bleed off. Thanks for the suggestions

pcguy2u

Going with a defective pump on this one. Check with Lingenfelter, they must have seen this previously...

micjester

Dropped the tank (again) over the weekend and found the problem. The line came off the pump assembly. It appears it's just some push on type fitting. It will have a clamp on it now. I will send to Lingenfelter and hopefully they can do something to stand by their product. Missed a whole track weekend and had to drop the tank again. Not exactly happy. Hopefully this will help someone else out....make sure to put a clamp on this if it's not supplied with one! I'll update when I hear back from Lingenfelter.