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04-10-2008, 09:00 PM
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pro-jackstand racer
Join Date: May 2005
Location: Milner, Ga
Posts: 2,473
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Is my fuel reg. bad?
OK, we got the fairmont to crank today and run ( for a little) checked fuel pressure and it was 70PSI
 no matter what we did to adjust the FP (Kirban billet AFR) it wouldn't budge from 70 psi. on stock foxbody railsNow for some background info for those just joining us....lol. Motor is a 331 with stage 2 TFS cam, 1.6 RR's, ported cobra upper/lower, edelbrock gear drive, TFS stage 2 heads, and a 255 intank pump....I guess the secondary question would be opinions on whether or not the 255 is TOO much pump for this motor (I think it is...) We took the regulator apart and there were no ruptures in the membrane and everything appeared to be OK inside it (not that I'd know if it was messed up...lol) So I need your opinions....should I step down to a smaller pump? or try another regulator? Thanks. Brad
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And God created Neil Peart so that lightning would make sense to the world.
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04-10-2008, 09:14 PM
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#2 |
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Welcome to America!
Join Date: Dec 2004
Location: in the 11's
Posts: 4,501
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in theory, a properly operating regulator should eliminate "too much" fuel pump...
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 91 GT Convertible 2006 Nissan Titan LE Crew Cab 2014 Peterbilt 337/Marion 22' box |
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04-10-2008, 09:47 PM
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Bet I red light B4U
Join Date: Aug 2005
Location: ANNISTON, AL
Posts: 975
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Pinched return line or clogged return.
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89 gt 2.3 stroked holley head with n12n port high flow intake with great big fart can skunk 2 seat belts with kool glow water squirters and new light up shift knob basically everything from wal-mart art carr C4 10.53@127.3 w/ 1.53 60' 89 gt vert 347 eldebrock heads and intake AOD w/3000 stall unknown with 5spd went 12.7 on steet tires 04 Mach1 automatic flowmaster K+N drop in 13.9 |
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04-10-2008, 10:55 PM
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Trunk Monkey
Join Date: Jun 2007
Location: Home
Posts: 5,708
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Quote:
 Or a bad check valve.
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Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS |
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04-10-2008, 11:02 PM
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pro-jackstand racer
Join Date: May 2005
Location: Milner, Ga
Posts: 2,473
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now the pinched line sounds possible as these are the mustang hard lines that have been made to "fit" the fairmont.....I'll check tomorrow...matter of fact...might be the plastic part of the return line....
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And God created Neil Peart so that lightning would make sense to the world.
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04-11-2008, 07:45 AM
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#6 |
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Super Moderator
Join Date: Dec 2004
Posts: 6,313
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Yea, bad line somewhere in the return after the regulator (or something clogging line).
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" If you can't explain it simply, you don't understand it well enough. " - Albert Einstein |
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04-14-2008, 06:01 AM
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pro-jackstand racer
Join Date: May 2005
Location: Milner, Ga
Posts: 2,473
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Quote:
 .Going to try and get it fixed today and then get timing/FP set properly and then to set the TV pressure (or just put in the PA trans/elec. OD valve body )thanks for the ideas guys.... I'll have some pics/audio/video if I can get some batteries for the camera
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And God created Neil Peart so that lightning would make sense to the world.
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