Fuel Pressure Question
Post Fiend
Joined: Sep 2006
Posts: 5,584
Likes: 0
From: Millbrook Alabama
as long as you've got a guage to check, try it . If you have too much pressure immedietly shut down and go back to shim that gave you 65PSI. The shim I used was a .065 and I have 70PSI. Rampage used a .050 and got 70PSI. YOUR RESULTS WILL VARY.
Posting Guru
Joined: Mar 2007
Posts: 1,425
Likes: 9
I checked my FPR pryor to installing the shims and it read 58 psi. So I chose to use the 065 as my first install and got 65psi. Then I installed the 075. The FPR didn't change it stayed at 65 psi. So I left the 075 inplace. It seems that the condition of the fuel pump will also have an affect on the FPR reading's were seeing. I need a knew Pump! Country
Thread Starter
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Freshman User
Joined: May 2003
Posts: 45
Likes: 0
From: Alabama
My FP is not stock. The stock quit about 25000 miles ago. I replaced it with a Bosch from NAPA. I only have less than 65000 miles on the truck. I think I will try the .075 shim and see what it will do. By the way I do have a guage so I can watch the pressure.
Elder User
Joined: Oct 2006
Posts: 600
Likes: 1
From: Albuquerque, NM
no, there are two plugs in the back of the fuel bowl you can use to set up a guage. They come out with an allen and a #8 O-ring boss fits the plug hole. Go to a hydraulic shop and get the O-ring boss, maybe a couple bucks, then you can usually find what ever other fitting you need to match up to the guage at the hardware store.
