I went to the car show in Tunica, MS this weekend. The drive down was fine, no problems what so ever. The drive back was a different story.

I gassed up for the trip back and within about 1/2 mile of the gas station, the truck started running like crap. It was way down on power....to the point that it would not maintain highway speeds and at times struggled to stay running.

Sometimes it would clear up and run like a hot rod. These good spells would last anywhere from 5 seconds to 5 minutes. When it was acting up, it only made power at idle and a hair above idle.....any more throttle and it would bog / sound awful / slow down.

I tried all sorts of things trying to drive it home (more timing, less timing, richer idle mixture....etc). Nothing worked very long. I ended up leaving it rich with the timing backed off a tad just to be safe.

Most of the way, I was able to find a "sweet spot" where it would maintain 65 mph.


Do I just have water in my tank?

Anything else I should check?