Fpr?
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Freshman User
Joined: May 2007
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Fpr?
How exactly do i shim the fpr??? i have a 97 F-350 psd and i pulled the plastic off the motor and can see were the little bike tire dust cap is, where do i go next and how do i do it? i belive i need a tire pressure gauge to tell me what the psi is? also i heard that if i run the pressure at around 72-75 psi i should be good, is that true? note, i have a ts 6 position chip tuned by t. wildman that i will be installing tommorrow, will that effect my chip at all? thanx guys!
Post Fiend
Joined: Mar 2007
Posts: 9,010
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From: Johnson City, TN.
That will not affect your chip or will you be able to tell a difference but it will have more pressure when it needs it. I will give you a link. Be sure to check the pressure before and after. I had 55 before and now I have 75. It is next to the schraeder valve that you will check the pressure at.
http://pages.prodigy.net/stevebaz/_i...az/index3.html
this is a cool site. bookmark it. Anyore questions check in with us I will see if I can find pics for you I have seen some but can't remember where.
http://pages.prodigy.net/stevebaz/_i...az/index3.html
this is a cool site. bookmark it. Anyore questions check in with us I will see if I can find pics for you I have seen some but can't remember where.
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a regular tire press. gauge works right?
and i pull the spring out, put the bb in, put the spring in and check it right? how do i adjust it if i need to?
and i pull the spring out, put the bb in, put the spring in and check it right? how do i adjust it if i need to?
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Post Fiend
Joined: Oct 2003
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From: MICHIGAN
Originally Posted by Strok'in
a regular tire press. gauge works right?
and i pull the spring out, put the bb in, put the spring in and check it right? how do i adjust it if i need to?
and i pull the spring out, put the bb in, put the spring in and check it right? how do i adjust it if i need to?
https://www.ford-trucks.com/forums/5...mming-fpr.html
BTW: A regular fuel pressure gage bounces with the pulses from the pump, it very difficult to read. After I shimmed mine the gage bouced from 20 to 90 psi without any trouble so far. I used a 3/16 ball bearing IIRC. A tire pressure gage might work but it may spray fuel out of it and will likely be junk afterwards.
Last edited by Cuda_jim; Jun 5, 2007 at 05:11 AM.
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Tuned
Joined: Oct 2006
Posts: 358
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From: Broken Arrow, Oklahoma
I used a cap srew and a brass nut to get the pressure adjustment. Works pretty good. For a guage you can also get a smiple liquid filled guage cost me about $10 and then a flexible grease gun hose will thread right into the same place as the shrader valve. This is easier to read than a tire guage will be. Be sure to get a liquid filled guage it slows the bouncing down some. I dont reccomend leaving the guage on though, because the bouncing will eventually just kill the guage.
Senior User
Joined: Oct 2006
Posts: 332
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From: Emmett, ID
Originally Posted by Neal 97 250
I agree 80 at the absolute max. Can't find the pics but it is and easy mod.
P.S. Schraeder valve = Bike tire thingy
P.S. Schraeder valve = Bike tire thingy
So, I kept seeing all the posts on the FPR shim, so I went out and did it (Like 5 min worth of work) My pressure was 58 lbs prior to the shim and after the mod went straight to 80, this was using a Tire pressure guage (this should be accurate I assume), doesn't seem to go any higher and I checked several times... Is 80 going to be too much?
Senior User
Joined: Mar 2007
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From: Idaho
Originally Posted by mcdavidson
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'''''[3
'''''[3
What I'm trying to say is that there are guys here running 80 ok but others have had problems with that much pressure. I wouldn't leave it that way if it were mine. But I'm far from being an expert on this stuff. Maybe look through the nut/bolt/parts bins at your hardware store for something thinner than a bb that would fit in there.
Senior User
Joined: Oct 2006
Posts: 332
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From: Emmett, ID
Originally Posted by 1997F-350
another way is to buy the $10 cali fpr kit which is set up to have your truck running at 75 psi.
Sounds good, but could use a little clarification on "Cali"
By the way it's good to see you online again!
Are you still deployed, on Furlow, or back?
And 10 bands, I didn't realize I replied with "
[;p-0- yyyyyyyyyyyyyyyyt55555555555rrrrrrrrrrrrrrrr4''''' ''''''''''''''''''''''''''''''''''''''''''''''''\
'''''[3",
I let my 8 month old daughter hack on the keyboard and in 30 seconds I guess she submitted a post!
Senior User
Joined: Mar 2007
Posts: 262
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From: Idaho
Originally Posted by mcdavidson
And 10 bands, I didn't realize I replied with "
[;p-0- yyyyyyyyyyyyyyyyt55555555555rrrrrrrrrrrrrrrr4''''' ''''''''''''''''''''''''''''''''''''''''''''''''\
'''''[3",
I let my 8 month old daughter hack on the keyboard and in 30 seconds I guess she submitted a post!
[;p-0- yyyyyyyyyyyyyyyyt55555555555rrrrrrrrrrrrrrrr4''''' ''''''''''''''''''''''''''''''''''''''''''''''''\
'''''[3",
I let my 8 month old daughter hack on the keyboard and in 30 seconds I guess she submitted a post!
I think "Cali" means California version. Different emissions standards and all that makes for some different/additional parts on PSDs there. Which is odd because Cali doesn't require diesels to be smog tested. Maybe I'm wrong. I was one other time.