Prevalance of failure of stock FPR?
#1
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Prevalance of failure of stock FPR?
It looks like out of the blue over the last 3 months my AFR's have become on average 1 - 1.5 points leaner and I can feel it, especially at idle.
Maybe because its the summer, but I want to eliminate the potential that it is the FPR. The car has 30k miles on it so I doubt its the fuel pump.
While I know its not catastrophic and can be easily remedied by a table update, I am paranoid because I dont remember if I had modified my tables for this same exact issue before or not.
Are there any known cases or patterns of failing stock fuel pressure regulators on turbocharged miatas?
Maybe because its the summer, but I want to eliminate the potential that it is the FPR. The car has 30k miles on it so I doubt its the fuel pump.
While I know its not catastrophic and can be easily remedied by a table update, I am paranoid because I dont remember if I had modified my tables for this same exact issue before or not.
Are there any known cases or patterns of failing stock fuel pressure regulators on turbocharged miatas?
Last edited by Saml01; 04-29-2010 at 10:41 PM.
#4
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I popped one a while ago. It happened really quickly while I was tuning. I did a couple of pulls and noticed the AFRs were half a point leaner suddenly, and then I started a pull and it pegged at 17:1 as soon as I entered boost. I nursed it home at 15-16:1. Pinched the return line and the pump was fine, so I swapped FPRs and it solved the problem.
It happened right after I installed a DIY dual feed rail, I swapped back to a stock rail after that. No idea whether it's coincidence or a shaving I missed or what.
It happened right after I installed a DIY dual feed rail, I swapped back to a stock rail after that. No idea whether it's coincidence or a shaving I missed or what.
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