ok i have a question...I have a 93 dodge with a 5.9 gas engine and first start up idles nice runs fine...once you hit normal operating temp, it goes into a small period of horrible misfire and backfiring out my air cleaner...but if i stop and work the throttle a bit itll clear up after about fifteen minutes then runs fine with a random light misfire barely noticeable...and it would all start on the day i try and sell the dang thing, please somebody help, im going to put a pressure gauge on the rail tomorrow just to rule out the fuel issue if possible...ill even try indexing my distributor its got 220,000 miles that shaft bushing might be worn ha...any suggestions?

 

I would check the timing and pull the plugs to see what they tell you. If you haven't done it in a while I would dump a can of SeaFoam in a full tank of gas and run it thru.

 

I've dwelled into it my cap was cracked and two busted plugs going to replace the plugs tomorrow as well as check timing the seafoam, I've used two cans already ha I had wished it was just bad gas