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Author
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Topic: Fuel pressure problem
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AaronC
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Member # 86
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posted
 
 
I'm trying like hell to dial my car in and I'm having fuel pressure problems. I bought a new regulator thinking it was my problem. I had the other one turned to the max and could only get 40-41 psi out of it. I get a new one and it works only temporarily. I had it dialed to 44 psi and at the end of a test drive (which went well) it was down to 42 again ![[Confused]](confused.gif) Seems like it's working it's way back down again. I don't get it Both regulators are Holley's. Is it a possible fuel pump problem? Anyone have some ideas on things to check?
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1991 GT Convertible: Stock 157k mile shortblock, HiTech cam, AFR 165 heads, Edelbrock RPM intake, 1 3/4 headers
12.23 at 112.99
Best MPH 113.97
Posts: 776 | From: woodland | Registered: Dec 2000
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93LX342
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Member # 1793
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posted
maybe it is a fuel pump going out.do you have a inline and a intank? if so maybe the inline died and is restricting the fuel flow.
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06 f250 superduty with some mods.
95 f250
www.unlimitedracing.com
Posts: 1036 | From: san jose | Registered: Sep 2002
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Stimson
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Member # 51
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posted
Try to isolate the problem.... put the stock regulator back on and see if it sticks to ~40 psi. If it reads abnormal for a stock regulator, check for kinks in the line (return line first)..
Posts: 2373 | Registered: Jun 2000
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cheap
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Member # 858
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posted
You are having the same symptoms I had when my 190 lph pump was going out. I swapped it for a 255 and haven't had problems since.
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1965 Spyder GT
Posts: 1358 | From: Maine | Registered: Feb 2002
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jmcclesk
Moderator
Member # 1355
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posted
Pump, I have seen it on many cars. Dead head the pump and see what peak pressure is
[ August 02, 2003, 11:33 PM: Message edited by: jmcclesk ]
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Ford trained ASE master tech.
Posts: 4024 | From: marrysville | Registered: May 2002
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AaronC
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Member # 86
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posted
Thanks for the input. Mike has a spare fuel pump for me to try. I'll give it a shot.
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1991 GT Convertible: Stock 157k mile shortblock, HiTech cam, AFR 165 heads, Edelbrock RPM intake, 1 3/4 headers
12.23 at 112.99
Best MPH 113.97
Posts: 776 | From: woodland | Registered: Dec 2000
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