yousell

https://ls1tech.com/forums/general-m...metimes.htmled

need some feedback on average miles that you guys have expericence with electric fuel pumps, I have 2001 z-28 and it will not start, has 50 to 60 psi at the rail with key on
see thread above link, Thinking about just replacing the pump anyway car has 127K what do you think,, thanks for the feedback
Tim

Anthony Williams

iTrader: (3)

100k on a fuel pump is good, but I would make the change now.

6speedt/a

iTrader: (1)

does it only do it after it has sat for awhile? If so you could have a bad fuel pressure regulator...an easy way to check is to put a fuel pressure tester on the rail turn the car on so the fuel pump primes then let it sit for awhile and if the pressure drops you have a bad regulator...

LS6427

iTrader: (2)

160,000+ on my Racetronix set-up...........went in with my 427ci in 2002.

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yousell

I get 60psi when the pump is running up and it drop to 50 in the gauage as soon at the pump shuts off during a key on test, would not the car still has enough presure to start the plugs firing and injectors to work? at this presure?

What pressure are you guys getting on a stock pump?

Tim

mike171562

iTrader: (4)

I had this in my case it was the pump, could also be a leak in the hose on the pump.

yousell

Thanks,, but did you have spark in your case?

mike171562

iTrader: (4)

I recently had the hose come off my pump in the tank, the hose was still connected, but just barely, my fuel pressure was like 40 psi with the key on and it started and ran fine. I only noticed cause the pressure would bleed off and i had to prime the pump to start it , spark was fine