fpr shim ?
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Joined: Dec 2003
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From: South Texas Coast
A spring that is instrumental in regulating fuel preassure gradually weakens overtime. Causing Fuel Pressure to drop. When fuel pressure is low there is less injected when an injector fires. Result = lost power. Shimming is done to bring fuel pressure back within nominal operating range by retensioning the spring. It can be done with a regular BB or a 4mm machine screw with a nut on it.
This site gives good instructions on how to do it: http://pages.prodigy.net/stevebaz/_i...az/index3.html
This is a very long page just keep scrolling until you find the FUEL section (it's about half way down te page) there are 3 or 4 segments on shimming the FPR all clustered near this point.
The BB method is very simple but inflexible the screw and nut allows pretty fine tuning to reach optimum Fuel Pressure.
This site gives good instructions on how to do it: http://pages.prodigy.net/stevebaz/_i...az/index3.html
This is a very long page just keep scrolling until you find the FUEL section (it's about half way down te page) there are 3 or 4 segments on shimming the FPR all clustered near this point.
The BB method is very simple but inflexible the screw and nut allows pretty fine tuning to reach optimum Fuel Pressure.
Last edited by Phydeaux88; Feb 14, 2006 at 12:01 AM.
