What would cause the distributor gear to wear on one side? truck is a 97 250K 454, 7.4 liter V8. its the original motor
Truck stopped running so replaced dist gear that was badly worn. cam shaft was scoped and looks good. it ran for a few 100 miles and quit again while idling. Seems to start ok when engine is cool.
Cam wobble due to excess bearing clearances, or a bad oil pump.