P0306 #6 Cyl. Misfire - Please HELP!

vendredi 3 octobre 2014

Hello everyone,



So I had a rough start earlier this week which was the first time anything had gone wrong with the Jeep since I have owned it.

It is a 2000 Laredo with a rebuilt motor, 240K on the body.



Now when I start the Jeep it idles rough in park and neutral and really rough in reverse and drive. It misses pretty bad under low to medium load but it is a little better under heavy load.



So far I have replaced the coil pack with a used one from another WJ, replaced the #6 injector with a used one from another WJ, replaced all the o-rings on all injectors and put in two bottles of Lucas injection system cleaner.



I was thinking I got a bad batch of gas but didn't think that would only make one cylinder miss. I am at a loss here. I cannot afford to take it to a mechanic...I have a baby due any day now.



Any and all help is greatly appreciated.



Thanks!




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