Originally Posted by away
Did the buzz test and I can hear 4 muted or fainter sounding injectors with the autoenginuity software. Is it injector time or could it just need the under valve cover harnesses?
Depends . . . . if all 4 were on the same side then i would say get the shim kit and do the UVC harnesses. If it was spread between each side it could still be the UVC harness slouching on each of them but I would try doing a contribution test. That is the only way I found my dead injectors. My buzz test turned out fine but when I lit it up with the contribution test the truck died!! Cylinders 1 and 8 misfired . . .
I also swapped out another IDM before ruling it injectors and I replaced the ICP sensor. Can't wait till tomorrow night to have this thing running better again!