Stepside_fever95
I'm Awesome
I have a 1999 K1500 Suburban that I swapped a 2005 LQ4 6.0 in. The engine has new acdelco 41-110 spark plugs, MSD Superconductor wires, green intake manifold gaskets, and stock coils and injectors.
Last night coming home in heavy rain it started to misfire really bad and the CEL was flashing constantly. The vehicle was shifting oddly as well probably because of the misfiring. I manually shifted down to 1st and gave it full throttle and it did fine until I let out and put it back in overdrive.
When I got home I looked on my scan tool and it was shaking cylinder 2, 4, 6, and 8 misfing with cylinder 6 misfiring the most. Today I have checked the injector pulse and swapped coils around and found nothing. My fuel pressure at idle was 52psi and 55 with the key on and engine off and held pressure. After looking at things I hooked up my scan tool and now im getting a few misfires on bank 1 as well.
Does anyone have any ideas as to what it may be?
The screenshot is from last night showing the instantaneous misfire count.
Last night coming home in heavy rain it started to misfire really bad and the CEL was flashing constantly. The vehicle was shifting oddly as well probably because of the misfiring. I manually shifted down to 1st and gave it full throttle and it did fine until I let out and put it back in overdrive.
When I got home I looked on my scan tool and it was shaking cylinder 2, 4, 6, and 8 misfing with cylinder 6 misfiring the most. Today I have checked the injector pulse and swapped coils around and found nothing. My fuel pressure at idle was 52psi and 55 with the key on and engine off and held pressure. After looking at things I hooked up my scan tool and now im getting a few misfires on bank 1 as well.
Does anyone have any ideas as to what it may be?
The screenshot is from last night showing the instantaneous misfire count.
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