Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by:

Shimming the FPR

 
  #1  
Old 08-15-2008, 06:54 PM
jhand124's Avatar
jhand124
jhand124 is offline
Posting Guru
Thread Starter
Join Date: Oct 2007
Location: Farmington, Minnesota
Posts: 2,225
jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.
Shimming the FPR

Well I shimmed the FPR today, following my install of my in cab fuel gauge (which I did earlier in the week). I was running 65 PSI on an original fuel pump with 215K on it, I thought that was pretty good but wanted about 70 PSI.

At WOT stock I was at about 55-58 psi which again is pretty good, but I was thinking it would be better if it stayed around 60-65 PSI.

So I started shimming with the #4-40 hex head bolt, which I got for free at Fastenal (they only sell them in a pack of 100), they called it a sample.

I first ground it down to .065 that gave me about 95psi KOEO, I thought holy crap that's way to much.

Next to .045 and that put me at about 80 psi, I almost left it there until I did a little more reading on pump failure and injector o-ring problems.

Then I got it to 78psi and thought I am only taking this thing apart and putting it back together one more time.

I ground it to about .040 and hit 70psi on the nose.....but now I have a fuel leak, I have taken this thing apart four times and put it back together and checked for leaks every time. I found that the rag I had under the FPR was caught between the housing and the FPR, I cleared that and I thought no problem, fired her up still a leak, so I took it all apart again (5th time).

AH..HAH, that little rubber seal thingy on the fuel line was shot, I thought "where the he!! am I going to find on of those and I have no other vehicle to pick one up. So I start rummaging around my tool box and find my plugs to my oil and fuel rails from the HPX and CCK (I know keep them in your truck) and low and behold there is two of those little rubber thingys left over from the CCK, who would'a thunk.

All is good now no leaks and I have 70psi at idle and about 60psi WOT. Which still seems extremely good.
 
  #2  
Old 08-15-2008, 07:28 PM
F350-6's Avatar
F350-6
F350-6 is offline
Post Fiend
Join Date: Mar 2007
Location: Texas
Posts: 26,926
F350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputation
Sounds like your day went better than mine at least.

I've got a question for you. You said you had 55 - 58 psi at WOT with the stock configuration, yet only mentioned 60 psi with the shim. 5 psi sounds like a respectable jump. If it was only a 2 psi bump it sounds like a lot of hassle.

Did you notice any difference in the SOTP meter?
 
  #3  
Old 08-15-2008, 07:39 PM
jhand124's Avatar
jhand124
jhand124 is offline
Posting Guru
Thread Starter
Join Date: Oct 2007
Location: Farmington, Minnesota
Posts: 2,225
jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.
Originally Posted by F350-6 View Post
Sounds like your day went better than mine at least.

I've got a question for you. You said you had 55 - 58 psi at WOT with the stock configuration, yet only mentioned 60 psi with the shim. 5 psi sounds like a respectable jump. If it was only a 2 psi bump it sounds like a lot of hassle.

Did you notice any difference in the SOTP meter?
I said about 60 maybe I should of said 60-63 psi at WOT, the gauge is in increments of 5psi so I may of rounded a bit one way or another.

SOTP meter is a little better, I think I though out a little more smoke also. I only took it for a little drive, thats when I discovered my fuel leak.

I guess my goal was to keep the psi above 60 at WOT.

Edit: what happened with your day?
 
  #4  
Old 08-15-2008, 07:49 PM
F350-6's Avatar
F350-6
F350-6 is offline
Post Fiend
Join Date: Mar 2007
Location: Texas
Posts: 26,926
F350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputationF350-6 has a superb reputation
Originally Posted by jhand124 View Post
Edit: what happened with your day?
A P1316 code on an 02 at work turned out to be a bad #4 injector that shut down the entire drivers bank, and some preventative maintenance tightening the injector hold down bolts and rocker arms on a 99 revealed a crack in the turbo intake hose and slight dusting on the wheel. I've got a couple of threads floating around about the issues.

So finding some rubber things in your toolbox to fix your leak sounds easy by comparison (not to mention cheaper).
 
  #5  
Old 08-15-2008, 08:05 PM
jhand124's Avatar
jhand124
jhand124 is offline
Posting Guru
Thread Starter
Join Date: Oct 2007
Location: Farmington, Minnesota
Posts: 2,225
jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.jhand124 has a very good reputation on FTE.
Originally Posted by F350-6 View Post
A P1316 code on an 02 at work turned out to be a bad #4 injector that shut down the entire drivers bank, and some preventative maintenance tightening the injector hold down bolts and rocker arms on a 99 revealed a crack in the turbo intake hose and slight dusting on the wheel. I've got a couple of threads floating around about the issues.

So finding some rubber things in your toolbox to fix your leak sounds easy by comparison (not to mention cheaper).
I guess I should of figured that out duh, I read the latest, rainy day and all, figure you would do some maintenance and it didn't turn out as expected.
 
 


Thread Tools
Search this Thread

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.