2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Removing fuel pressure regulator (FPR)

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Old Feb 23, 2005 | 03:29 AM
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Removing fuel pressure regulator (FPR)

How does the S4 TII FPR come off the fuel rail? Does the FPR unscrew from the nut, or does the nut unscrew from the rail? Its stuck mad tight and I don't want to break the rail cause its a long hollow aluminum tube and I lift weight. And yes, I sprayed it with WD-40 and checked the FSM. It only says remove vac line, remove fuel line, remove FPR. Doesn't show exactly where to remove it from.
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Old Feb 23, 2005 | 09:44 AM
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same like shifter ****, nut is there like counter....first get loose nut, then screw out whole thing
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Old Feb 22, 2006 | 09:04 AM
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so would that mean you actually have to "tighten" the nut?
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Old Feb 22, 2006 | 09:28 AM
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Originally Posted by Project84
How does the S4 TII FPR come off the fuel rail? Does the FPR unscrew from the nut, or does the nut unscrew from the rail? Its stuck mad tight and I don't want to break the rail cause its a long hollow aluminum tube and I lift weight. And yes, I sprayed it with WD-40 and checked the FSM. It only says remove vac line, remove fuel line, remove FPR. Doesn't show exactly where to remove it from.
Post a pic, my menory fails me. i think the "nut" is part of the regulator and therefore should be removed from the rail. Hold the rail with a vise (or bicep) and put a wrench on the "nut".

Justin
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Old Feb 22, 2006 | 10:42 AM
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Unscrew nut first as far as it goes then unscrew fpr from rail. I just did mine its easy.
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Old Feb 22, 2006 | 10:45 AM
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then if i was to do an aftermarket FPR where would i get a fitting to go on there to put a line to go to my FPR...since it wont fit in the stock spot...
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Old Feb 22, 2006 | 11:32 AM
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Originally Posted by MattB
then if i was to do an aftermarket FPR where would i get a fitting to go on there to put a line to go to my FPR...since it wont fit in the stock spot...
I use the banjo bolt from a pirmary fuel rail from a n/a car.
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Old Feb 22, 2006 | 12:18 PM
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well i dont have an NA laying around...i have another TII engine...does it have the same thing on one of the fuel rails?
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Old Feb 22, 2006 | 12:42 PM
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Originally Posted by MattB
well i dont have an NA laying around...i have another TII engine...does it have the same thing on one of the fuel rails?
I don't know. I pick up a NA fuel rail on the form for 10.00 shipped, look in the for sale thread.
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Old Feb 22, 2006 | 01:22 PM
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ill take a look tonight if i can steal the fitting off my other TII engine...i dont see why it wouldnt have it...
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Old Feb 22, 2006 | 01:34 PM
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Originally Posted by MattB
well i dont have an NA laying around...i have another TII engine...does it have the same thing on one of the fuel rails?
Thought I had one lying around here to give you but I don't damn...

The other TII rail should have one...
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Old Feb 22, 2006 | 01:34 PM
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Originally Posted by MattB
ill take a look tonight if i can steal the fitting off my other TII engine...i dont see why it wouldnt have it...
I belive one side of the rail is bigger then the other, well for your sake i hope i'm wrong. good luck.
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Old Feb 22, 2006 | 01:40 PM
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im working until 5 so ill let you guys know when i get out...
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