fuel pressure regulator questions???

bronco71 · #1 (**permalink**) 02-13-2013, 04:31 PM

I have a 96 and have read about the fuel pressure regulator shim. My fuel pressure was at 50PSI and installed the California emissions regulator and it went to 80PSI. Ford spec is 50-70 I believe. Things I have read say not to go over 75PSI. If the Cali spring gets it to 80 and it is a ford part what could it hurt? The truck is more responsive and idles a lot smoother.

**351fifty** · #2 (**permalink**) 02-13-2013, 04:41 PM

What is psi at wot

bronco71 · #3 (**permalink**) 02-13-2013, 05:04 PM

I don't believe the gauge is liquid filled but a snap on gauge fluctuating between 75-85 at between 3000 and 3400. at idle it fluctuates between 75-80.

**351fifty** · #4 (**permalink**) 02-13-2013, 05:18 PM

Not sure if its hurting at all if you say it runs better, I have a Cali model but have yet to check fuel pressure as it has yet to let me down

**Justin@DP-Tuner** · #5 (**permalink**) 02-13-2013, 10:54 PM

Anything above 75psi, and you start to run the risk of damaging injectors.

**351fifty** · #6 (**permalink**) 02-13-2013, 11:00 PM

But being a factory ford part are Cali model 97's f'd from the get go?

**Justin@DP-Tuner** · #7 (**permalink**) 02-13-2013, 11:18 PM

Quote:

Originally Posted by 351fifty

But being a factory ford part are Cali model 97's f'd from the get go?

No. What I am saying is that it is not supposed to see that much pressure. A stock Cali model truck does not see that pressure either. My Cali model truck sees 70psi(it is a SD, but same concept).

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