Originally Posted By 440_Offroader
I had the very same style truck years ago with the exact problem. I couldn't figure it out, so I took it to the dealership. They said it was the distributor drive bushing was worn. If that's what they replaced, it fixed the problem. Ran perfect afterwards.


THIS Real common on the OBD1 magnum engine trucks , And its really common on a 3.9 V6.

Quote:
^^^ I wonder if a sloppy t chain could cause the same type of "spark scatter" symptoms?


MAYBE, but not likely.