restricting any line will cause issues but either way any time i seen your issues it was purely a fuel delivery issue
restricting any line will cause issues but either way any time i seen your issues it was purely a fuel delivery issue
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
That's what I'm thinking, especially since both O2 sensors are showing lean. Hopefully getting the injectors cleaned will take care of it The weird thing with the rail pressure is that immediately when I turn the key it will jump to 50, and then the pump will shut off and it will drop to 40. And when it's running it will go anywhere from 37 to 50. The first regulator was a brand new AC Delco part and this new one is a BWD and the same thing occurs.
I got the injectors cleaned and placed back into the truck, no change. I am misfiring the most on 1-4, with a few misfires on 5 and 7, and very few on 6 and 8. I have 12 volts on pink, and there is about .7 ohms of resistance on the ground wire on 7 of them, the 8th one if 1.7 ohms. Noid light flashed on all 8. Still have the p0200 and p0300 codes with a lean condition on bank 1. One thing I noted is that when I unplug the MAF the truck seems to be running better, although it seems that the MAF being disconnected means that the misfire counter on EFI does not work, however both O2 sensors are around 800-900 mv. I'm using the original MAF. I'm pretty much out of ideas so any ideas are appreciated.
I ended up recalibrating the MAF to the 98 one and that problems seems to have gone away. I'm still getting the p0200 and p0300 codes though, with both 6 and 8 misfiring quite a bit. 5 and 7 are misfiring a little bit, but I'm not sure that it is enough to trip the code. I'm going to pull out the plugs and clean them up, and then make a test harness for the injectors so that I can connect both 6 an 8 to the computer without going through the original harness. Perhaps I damaged the harness when I was rewiring things. I pull a 5.3 harness out of the junkyard today, so if it turns out the stock wiring is damaged, I will replace it with the 5.3 harness.
I took off the intake manifold and there was oil on the inside of the o ring on both cylinders 6 and 8. Bad PCV valve?
As long as you use stock pcv system you'll have oil
I still say fuel supply is your issue
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
Where is the harness from or did you modify it?
97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
TURBO IN THE WORKS
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