IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: Buicksrus on July 19 2012, 01:49:39 AM
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I have a 1987 GN that has a ACCUFAB fuel pressure regulator, that although rebuilt, does not increase fuel pressure when accelreating. What FP regulator should I buy to replace the one on my car?
Thanks guys!!!!!!!!!!
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Does the pressure change when you remove and replace the vacuum hose?
If so I'd be looking at the pump and filter first.
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If it really is the regulator, the one you have is as good as it gets and it can be rebuilt/repaired
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Undo the 6 allen head screws & take a look at the diaphram. If it isn't torn then it's probably fine. Thats all they include in a rebuild kit. Pretty unusual for them to tear as they are quite strong.
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Dumb question but if the diaphragm was torn then wouldn't fuel leak from the vacuum fitting on the regulator?
Undo the 6 allen head screws & take a look at the diaphram. If it isn't torn then it's probably fine. Thats all they include in a rebuild kit. Pretty unusual for them to tear as they are quite strong.
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No. The fuel bypassing the diaphragm would be drawn into the engine causing a rich condition. You would notice the issue if you pulled the vacuum line off while the fuel pump was running.
Been there, done that.
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Good to know, thank you for clarifying :-)
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