dabineri

I have an '89 pickup with efi 22re. The pressure regulator would never get over about 40psi so I thought I would replace it. Got a new one for this vehicle, installed it and the pressure now goes to about 43psi when I rev it. BUT the pressure leaks down right away when the engine is stopped. By pinching the return line from the regulator I can stop the leak down so that is where the leak is I think. The leak down takes about 5 seconds.
Then got another regulator from a different supplier and it behaved the same way.
Then I put the old regulator back on and it holds the pressure for at least a couple of hours after shutting off the engine.
What is going on with these new regulators, it just doesn't make sense to me?
Many thanks for any advice. Dave

jaysson_2012

No way you need 40 psi . I know its efi but my weber is only set to 2.5

dabineri

The engine spec is for 43 psi. Dave

jaysson_2012

Wow. I was wrong. That's insane

dabineri

Now, The question was, why is the new regulator behaving this way?

dabineri

After speaking with the manufacturer, I find that they just assert that the pressure will remain above 25psi for a minimum of 5 minutes once the fuel pump is off.

Odin

Your experience makes me think if I ever have to replace mine I'll be purchasing OEM.

wyoming9

iTrader: (1)

My question is what kind of problems were you having prior to replacing the FPR??

Are these issues now fixed??

Perhaps now your engine is running worse then before??