I have a 1994 Ford F250 with a 460 engine. The engine runs rough at idle and runs rich. When driving at highway speeds, the engine stumbles and misses. I have replaced everything that makes a spark. The comp test is 150 all. The valve springs all seem ok and cam lift seem ok. I bought the truck with this problem, and all I've done has changed nothing. Anyone have any ideas??? Thanks! Don
- posted
12 years ago