06-04-2015, 10:44 PM
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#11 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: Chicago
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Quote:
Originally Posted by Mitco39
Just got to Vegas, fuel pressure was fine till the temps got up to about 210-220F and the idle fuel pressure dropped down to 40-50PSI and I could confirm that it was low because my AFRs were showing leaner than it was when it was at 58PSI.
I am really starting to think this regulator is being affected by heat and that spring that regulates pressure is getting weaker with the heat.
Possible?
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Never heard of it happening before but I suppose anything is possible. I'd still bet on the mystery brand pump. Unfortunately its unlikely to be diagnosed fully until you begin the process of elimination.
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