I generally do most of my own maintenance or at least give it a shot. In this case I must have done something really wrong. Please assist.
I have a 2012 t&c with the 3.6 pentastar flex fuel engine. It started running rough and was throwing a code. Took it to auto zone and had them test code and they said it was p0301. Possible bad plugs, coil, etc. bought new plugs since I have 156k on originals. Replaced all 6.
Drove the next day, seemed fine. After about 100 miles, displayed same stuttering at 70mph, slowed, did it for another couple minutes then stopped. Figured there was still a problem.
Bought a new coil/boot and replaced #1. While doing so, I took off the manifold again (I know NOW I didn’t really have to do that to get to #1) and realized bolt 1 was broke. Also broke the tab that hold the harness firm to the boot. Harness still stays on fine, but worth mentioning.
Put the manifold anyway and tightened them all too tight. Didn’t realize 8nm was soo not tight. Now I do and have a torque wrench. When I started it (accidentally did it without the sensor that goes back into the port on the air intake. Not a big deal but more detail the better), barely started and was ticking/knocking super loud. Turned it off and replaced the boot/coil with old one. Same problem. Oh yeah, also put a whole can of sea foam in with a 1/4 tank of gas.
Took off manifold and tried to get broken bolt out of the bottom part of plastic manifold with an extractor but only was able to push it further down. Bought all new bolts from Chrysler and put them all back in torqued to 8nm. Cranked, sounds terrible. Added another 1/4 tank of gas to dilute the sea foam and ran again. Sounded a tad better but after a minute it sounded like something clinking around in engine then died. Can’t restart.
What am I missing? Was thinking now I have to take off manifold, upper and lower (wrong term maybe?) and take off heads to see what may be there. Could the end of that bolt have made its way into engine?? That is my fear.
Thanks for your input. Sorry for all the typing. More info the better.