Fuel Pressure Regulator
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
Most just remove the cover and replace the diaphram. That is the easiest as you don't have to mess with the fuel rail.
You can replace the whole FPR body and diaphram. You'd have to remove and disassemble the fuel rail to do it.
You can replace the whole FPR body and diaphram. You'd have to remove and disassemble the fuel rail to do it.
Burning Brakes
Joined: Nov 2008
Posts: 995
Likes: 1
From: Naples Campania
diaphragms can go bad. If you want to take it into your own hands, you can rebuild it yourself on the kitchen table. You can get a rebuild kit from Mid America, Summit, and I'm sure a few other places.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
Here is how you do it.....Pull the plenum, remove the screws around the perimeter of the FPR, pull old diaphram out , make sure surfaces are clean, put in new diaphram, put cap back on and replace and tighten screws, replace plenum..All done..If you want to get an adjustable FPR and put that on instead of the stock cap you can get these for around $50.00......WW
Here is the cheapest place to get a diaphram...
http://www.tpis.com/parts/view/15
Here is the cheapest place to get a diaphram...
http://www.tpis.com/parts/view/15
Last edited by WW7; Sep 4, 2011 at 09:43 AM.
Race Director
Joined: Feb 2003
Posts: 11,671
Likes: 20
From: Lake Wylie SC
Here is how you do it.....Pull the plenum, remove the screws around the perimeter of the FPR, pull old diaphram out , make sure surfaces are clean, put in new diaphram, put cap back on and replace and tighten screws, replace plenum..All done..If you want to get an adjustable FPR and put that on instead of the stock cap you can get these for around $50.00......WW
Here is the cheapest place to get a diaphram...
http://www.tpis.com/parts/view/15
Here is the cheapest place to get a diaphram...
http://www.tpis.com/parts/view/15
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
This procedure is only for L98 motors.. I have a 89, same as the OP..WW
Thread Starter
Racer
Joined: Sep 2011
Posts: 462
Likes: 30
From: Riverside California
Thanks for the tips, I'm not sure if the LT4 is different than the LT1. You do need a special torx bit, they have a security hole in the center of the bit. Think these we're used to keep the average Joe from messing with the smog system. You can get the right bit @ Sears for $7.99 part # 925702, it has 6 of the most common used bits and will work on the FPR. . .
Took less than 1/2 hour to get to the regulator and once inside found the seal ripped. Will button it all back up once I have the new part and be back on the road. .
Took less than 1/2 hour to get to the regulator and once inside found the seal ripped. Will button it all back up once I have the new part and be back on the road. .
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Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
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Thread Starter
Racer
Joined: Sep 2011
Posts: 462
Likes: 30
From: Riverside California
Thread Starter
Racer
Joined: Sep 2011
Posts: 462
Likes: 30
From: Riverside California
Here is how you do it.....Pull the plenum, remove the screws around the perimeter of the FPR, pull old diaphram out , make sure surfaces are clean, put in new diaphram, put cap back on and replace and tighten screws, replace plenum..All done..If you want to get an adjustable FPR and put that on instead of the stock cap you can get these for around $50.00......WW
Here is the cheapest place to get a diaphram...
http://www.tpis.com/parts/view/15
Here is the cheapest place to get a diaphram...
http://www.tpis.com/parts/view/15
