Shimming the FPR means installing a BB. I'll see if I can find the link for you or you can try a search for "FPR Shim". There should be some pictures along with the instructions.

You'll need a Q-tip with the cotton removed to clean the FPR screen.

I don't how to check to the stuff Joe mentioned. I'm waiting for him to respond to you.

Here's a link to check out. It isn't the one I was thinking of, but I'm still looking.

https://www.ford-trucks.com/forums/7...ator-shim.html

 

we put three different gauges on it and never got over 25 to 30 psi. why does the gague needle bounce real bad? when i reved it up to 3300 rpm maby got 35 psi. what is the next step?

 

If you have low fuel pressure, I wouldn't do the shim mod to fix it. Likely you have a weak pump, I'd fix that properly first. Also if you can get data stream check your HPOP pressure maybe.

 

does the hpop have any thing to do with the fule press. if any one wants to call me fell free to or ill call. jason 832-647-3765

 

Nothing to do with fuel pressure.

 

is there a step by step on how to shim? and are they talking about a bb for like a bb gun?

 

that on guy says a .177 caliber bb gun. i bet this is my whole problem low fule press. and that is why im getting balance/ cont. codes.

 

do you have to remove the fule press. regulator block to shim it or just the brass plug

 

i found that the fpr spring had some broke off. i shimed it to get 60 psi but still stops at 2900 rpm then revs up and blows a little white smoke.

 

hey rubber duck give me a call 832-647-3765

 

has any one ever heard of up dateing the pcm.

 

I'm at work again, but I'm not near a phone right now. What's up...

 

was going to talk to u about the fpr block.