91 Comanche sputters and won't accelerate
Sometimes when Im accelerating, the engine starts to sputter and won't accelerate, and recently I think I've heard a pop or a clunking sound underneath me. Every second or two it will catch and speed up for a millisecond, but I have to floor it to be able to keep up with everybody (most of the time that doesn't even happen). It doesn't happen every time I drive. In fact the first time it happened was about 3 months ago, and it happened a couple times within that week. After that it hasn't happened up until about two weeks ago, and it's been reoccurring a lot more randomly. Any suggestions?