Post by
Chris28 »
https://forums.nicoclub.com/chris28-u70836.html
Thu Mar 01, 2012 8:33 pm
Alright, here's tonight's diagnosis. I replaced all my fuel injector o-rings, that didn't do anything.
Daughterboard fell out again, that's one of the reasons I was running super rich. With the daughterboard out I have a steady 1500 rpm idle at 11.1, daughterboard back in and the idle goes back and forth from 1500 to 2000.
Fuel pressure is 45psi with the pump priming, once the pump stops priming however pressure immediately drops to 20psi and slowly bleeds off from there. Should it be dropping that quickly? I just replaced my o-rings but I didn't use OEM ones, maybe the Advance Auto o-rings are leaking.
Timing is steady at 22 btdc, it's not dropping off to 0 every time the idle falls like it used to do but the injector pulse width goes from 2.5 to .82 when idle falls, then back up to 2.5 with the idle.
I can try replacing my FPR, I'm running out of ideas though.