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Posted: Mon Feb 05, 2007 9:01 am
by 92hb_hb
i've had this symptom too.. i'm running a walbro, rc750s', and an AEM fpr.. I have a fuel pressure gauge on my fuel filter and it reads about 40-42 @ idle.. Is that about right? or should it be lower??
sometimes the popping happens, sometimes it doesnt..
Posted: Mon Feb 05, 2007 12:14 pm
by Spunkster
You may need to run the car slightly leaner or slightly richer at idle.
Posted: Mon Feb 05, 2007 3:56 pm
by Shmaa
40-42 is pretty good, pull the vacuum off of the fpr and check it, I try to keep mine a litte under 50psi.
if it is only doing it occasionally you can probably just richen up the idle a tad and that should take care of it.
Before I got a fpr my fuel pressure was over 60psi and I had to run like 12.5 afr's at idle to get it to stop poping.