Ok Ive been having some issues with my dam truck recently. Heres what I know to be a fact, I am getting a P0300 code and only cyl 2 and 8 are showing miss fires. I have a new(ish) distributor, cap, rotor, plugs, and wires. I hooked HPT to it today and I am seeing that my LTFT and my STFTs look fine, along with what I would consider normal O2 readings. The one thing I saw that I thought was kinda odd was the Cam Retard timing. I was reading that it should be +/- 4* and I was seeing -15*. I am certainly going to correct that isssue. But my question is, would the CRT being off that much cause a miss fire on just those two cyl?
Truck will start and drive. But runs like total ****. Idle its MEH, but once under load and given any throttle, it shakes REALLY bad and will barely accel. It literally happened while driving it, but I had been having hesitation issues for the past few weeks/months. Nothing major until this happened. If I rev it while in park or N, it "pings" in the exhaust.