hey here's a ideer, if I remember correctly you have to remove the spark plugs to do a compression test. when he puts them back in just change #6 with another 1 ! both scenarios eliminated .....
I appreciate the info you all are providing. I will check the wiring. Gonna have the shop swap the plugs and to the compression check on the new motor. Figure I'll hold tight till the 600 mile break in oil change for them to do that. That will also give wrangler fix time to get me a new PCM so I can try and eliminate that as well. I appreciate all the advise.
Could clogged catalytic converters cause this?
Po306 finally fixed. Thanks for all the advise. Turns out that I had a bad coil pack. I had already replaced it but the new aftermarket one was bad. Added new coil pack. I've driven it 100 miles and it seems to be fine
Just had a misfire fixed by taking it in and getting the valves done at a machine shop. Had a burnt exhaust valve.
Awesome, glad you got it fixed man.
Did you do a compression or leak-down test to tell you the cylinder was losing compression?
Compression first raised some suspicion, then the leak down.
Will be working on a P0306 misfire tomorrow that just happened on Wednesday.
Starting with new plugs and also have a new NGK coil pack.
Plugs haven’t been changed in a long time and coil pack is 18years old with 145k miles.
Thanks for starting this thread and posting your outcome.
Crossing my fingers…
Will let y’all know how it turns out.
Awesome dude! That's an annoying thing about electronics (and mechanical stuff for that matter)...you can put in a bad part but assume it's good bc it "usually" is. Glad you circled back to confirm.
Sometimes you know what you are looking for and sometimes you check again on gut instinct simply to confirm. It's 50/50 when you go the latter route...you are either an idiot or the man.