cylinder misfire

1998 Sahara TJ 4.0 5 Spd (215k miles) Hello all, I am attempting to chase down a bad misfire that randomly started around a week ago. I daily drive my TJ, change the oil every 3500 miles, and don't beat on it hard. It's very rough on idle, but appears to be fine when driving, other than being...

Hello all. I am new to TJ (and Jeep) forums so I hope I'm posting in the right place. I recently had P0306 engine code (later found out one hot morning while firing up the Jeep. Check engine was flashing. I drove approximately 3 miles to have the code read (P0306). I then drove another...

I recently got my 2006 LJ back on the road. Of course it failed inspection. Had cracked front and rear manifolds - replaced. I then started getting the code for 6th Cylinder Misfire. The plugs and coil have been replaced and the fuel system was cleaned. Still getting the code. The...