Today while I was poking and prodding the Jeep in hopes it would give me a sign, I found a problem. One that from all I can tell would cause the PCM to report misfires that it would have trouble pinpointing.
There is a crack in the intake plenum just forward of the injector for cylinder 1. I found this because the engine started whistling at me. I've heard this sound before while diving and infrequently while parked and idling, any time I've tried to pop the hood and find it, it stops the moment the hood opens. Today, it was happy to let me pinpoint.
I dont have any carb cleaner, but I do have some electronics parts cleaner. Sprayed some of that at the crack and the engine wasn't too happy about it.
I'll be getting a new intake plenum and swapping that out when I have time. I'll report back when that gets done!
There is a crack in the intake plenum just forward of the injector for cylinder 1. I found this because the engine started whistling at me. I've heard this sound before while diving and infrequently while parked and idling, any time I've tried to pop the hood and find it, it stops the moment the hood opens. Today, it was happy to let me pinpoint.
I dont have any carb cleaner, but I do have some electronics parts cleaner. Sprayed some of that at the crack and the engine wasn't too happy about it.
I'll be getting a new intake plenum and swapping that out when I have time. I'll report back when that gets done!