In june i bought a 97 Tj with a blown up 4.0, i purchased a rebuilt long block from a local jeep shop. Im throwing a code for a cylinder 3 & 5 misfire, its a pretty steady misfire. It happens 98% of the time, occasionally i will shift into a gear and it'll pull all the way through that gear without missing. that doesnt happen very often. I have replaced
Spark Plugs (twice)
Im sick of throwing money at it. whats the next logical thing to replace or test to do? Side not, if while its running i empty a can of carb clean into the intake pipe, and im talking the WHOLE CAN, itll run without missing for about 5 min....and at that time the intake plenum is cool to the touch. i was thinking the map sensor and the tps sensor.