You could have the firing order messed up.
Sounds like a bad vacuum leak, maybe a bad intake manifold gasket?
vacuum leak
check make sure the firing order is correct.
1992 lt1 corvette runs good until it reaches 190 degrees the starts rough idel and backfires/ the car would kinda run rich in its past with black smoke at times
the Cherokee played a rough type of lacrosse that was so violent people often died during the games.
I have a problem. I just bought a used 1995 Kawasaki 220 Bayou. The engine started running a little rough at first. Kept getting worse and then started backfiring through the exhaust. I had the carbeurator rebuilt but still runs rough and backfires. Cranks good and idles good. What could be my problem? Thanks
yes it can
Wheels are likely out of balance
the spark plug wires
The year, make and model info would be helpful but a large vacuum leak could do that.
i think the computer need to be reprogram