Garage Storage Organization and Garage Cabinets

unclejemima · **how to adjust fuel pressure...**

i have an adjustable fuel pressure regulator, how do i adjust it. I dont have my stock one anymore, and i am running stock injectors at stock boost until my engine is broken in. How do i go about setting my fuel presure regulator to 55psi (stock)

thanks
-mark

cybermrc · 03-23-2004, 10:53 AM

-Hook up a fuel pressure gauge to the shrader (spelling?) valve on the fuel rail.
-Start engine w/ FPR vacuum line disconnected and plugged.
-Using a 3/16" size allen wrench and a 7/16" size wrench, tighten the allen screw until fuel pressure rises to the desired level.
-DO THIS SLOWLY!
-Clockwise raises the fuel pressure, counter-clockwise lowers it.
-Next tighten the lock nut securely and reconnect the vacuum line.
-Fuel pressure should drop ~10 psi with the vacuum line connected.

unclejemima · 03-23-2004, 01:40 PM

wow, thanks!!! Couldnt get any easier than that.

So, cause my fuel pressure is going to drop by about 10psi with my vacume line connected, i set the fuel pressure to the desired amount that i am supposed to have with the vac line off.

I need 55psi i think, correct me if i'm wrong, stock. And it will drop to 45psi after i connect the vac line.

Sound good?

Thanks again!!!!!

-mark

unclejemima · 03-23-2004, 09:25 PM

oh, and this is done with the car running, right?
-mark

LancerShelby · 03-23-2004, 11:10 PM

Quote:

Originally posted by unclejemima
oh, and this is done with the car running, right?
-mark

Yes.

unclejemima · 03-24-2004, 04:58 PM

check out my pic, am i doing this right?

unclejemima · 03-24-2004, 06:57 PM

Oh, and i tried turning it in as much as i can, and can only get 43psi or so, howcome?

I can run my +20%'s perfectly with 43psi, right? Is there any drawbacks to doing this if i run low boost during breaking? My engine has 0miles on it, and has ran for like 2 minutes total time.

LancerShelby · 03-25-2004, 10:13 PM

Yes to the pic. You should be able to get more than 43psi at idle for sure. What pump do you have?

unclejemima · 03-26-2004, 01:07 AM

well, the regulator i have is one some guy made, he took my stock one and modified it.

If your talking fuel pump, i have no clue. Its all stock. Could that be the problem?

Does it hurt the car running it with low fuel pressure if i dont dig into the boost?

-mark