I’m hoping someone can point me in the right direction. I have a 2005 Jeep Wrangler with a 4.0. In December my state had a -8 day (I don’t have an engine block heater) and my Jeep did not start well on that day. Since then I experienced multiple issues, one being a cracked exhaust manifold (bank 1). I didn’t have time to fix it at the time and made the mistake of taking it to the stealership. When I picked up my Jeep, the intake manifold bolts were loose and one was missing, and the pre-cat on bank 1 exhaust manifold (the one replaced) was loose. (I didn’t find the missing bolt until later). Long story short: I discovered the head gasket blown (anti-freeze in oil, but no oil in anti-freeze). My Jeep was misfiring to were it would not start and sounded like explosions in the intake manifold. It turned over, but would not stay running. The plugs were soaked with gas. I assumed it was the head gasket causing the problem.
Jump to now: I changed the head gasket myself and cleaned everything thoroughly. Head was pressure tested and milled. Cylinders inspected by a professional and all look great. New bank 2 exhaust manifold and new bolts for both manifolds. Everything put back together to specs (I have the manual). Went to start the engine and getting same misfires and sounds like small explosions in intake then it dies. Pulled plugs: 1, 2, and 3 soaked with gas…so it’s flooding out again. 4, 5, and 6 were wet with gas but not soaked. No codes being thrown. Compression tested all cylinders and all within acceptable parameters. Replaced MAP and idle sensors on throttle body. Tried another computer….same results. Shorted out thermostat sensor….same results. I am at a loss and frustrated.
I tried to keep this short so someone would read it, but would be willing to communicate off-line to thoroughly explain in hopes to get good advice.
Jump to now: I changed the head gasket myself and cleaned everything thoroughly. Head was pressure tested and milled. Cylinders inspected by a professional and all look great. New bank 2 exhaust manifold and new bolts for both manifolds. Everything put back together to specs (I have the manual). Went to start the engine and getting same misfires and sounds like small explosions in intake then it dies. Pulled plugs: 1, 2, and 3 soaked with gas…so it’s flooding out again. 4, 5, and 6 were wet with gas but not soaked. No codes being thrown. Compression tested all cylinders and all within acceptable parameters. Replaced MAP and idle sensors on throttle body. Tried another computer….same results. Shorted out thermostat sensor….same results. I am at a loss and frustrated.
I tried to keep this short so someone would read it, but would be willing to communicate off-line to thoroughly explain in hopes to get good advice.
Last edited: