Setting Adjustable fuel pressure regulator.
Thread Starter
Burning Brakes
Joined: Feb 2001
Posts: 769
Likes: 0
From: Granbury TX
Setting Adjustable fuel pressure regulator.
I have lost my instructions which came with my Adjustable FPR kit. My 87 L98 had the factory set non-adjustable regulator on it.
Most regulators I have worked with in the past, increase outlet pressure by thghten down the adjusting screw, and conversly, one decreasses pressure by loosening the adjusting screw. I have way too much presure, and the adjusting screw is nearly backed completely out.
Do these regulators respond as I have described above and if so, what do I do if I back the adjusting screw out completely and still have too much pressure.
Most regulators I have worked with in the past, increase outlet pressure by thghten down the adjusting screw, and conversly, one decreasses pressure by loosening the adjusting screw. I have way too much presure, and the adjusting screw is nearly backed completely out.
Do these regulators respond as I have described above and if so, what do I do if I back the adjusting screw out completely and still have too much pressure.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
It sounds like you may have gotten the metal washer skewed when you installed the hat. This could cause it to press to much on the spring.
Pull the hat, lay the disk atop the diaphram and install the cap.
Recheck the adjustment range.
Pull the hat, lay the disk atop the diaphram and install the cap.
Recheck the adjustment range.
Thread Starter
Burning Brakes
Joined: Feb 2001
Posts: 769
Likes: 0
From: Granbury TX
Thanks! I'll try that tomorrow. Although, at this point it will be like building a ship in a bottle. It's very hard just to get a wrench on the adjusting screw, let alone taking it apart and putting it back together. Oh well! I guess you gotta do what you gotta do..
Team Owner
Joined: Jan 2003
Posts: 20,333
Likes: 263
From: Summerland B.C. Canada
You can and should test your reg before you put the runners and plenum on. Supply 12 volts to terminal "G" on the ALDL, the pump will run as long as the power is there.
Is there a chance the diaphram is upside down ?
Is there a chance the diaphram is upside down ?
