So I'm confused, it doesn't seem like a blown head gasket (no bubbles, not enough coolant loss to cause a misfire), and it doesn't quite seem like a fallen rocker arm (no tapping noises), and it doesn't seem like cracked manifold (no exhaust noise near the engine).Īny thoughts? I am really not sure what do next? I'm going to remove the valve covers and see if there is any visible issue with the rocker arms, but I suspect they are okay (recently rebuilt motor.). There aren't any bubbles or gasses coming up through the radiator, but there is a smell of oil near the rear of the engine (near Cylinder #7), and some white smoke drifts up from near the exhaust manifold in the same general area We pulled the spark plugs for #5 and #7, and #7 (the misfire cylinder) has a lot of oil on the spark plug head, and is fouled and gunky. It is loosing coolant, but not huge amounts, there is a small coolant leak between the hose and the radiator that could be the source of lost fluid. However, there is a lot of white smoke coming out the tailpipe once it warms up, and its got no power at all. It sounds terrible at the tailpipe, though it idles okay, with only a minor hickup audible from the engine bay. It has a significant misfire on Cylinder #7, indicating P0307. ![]() We bought it a few months ago, and didn't rebuild the motor ourselves, so we aren't sure how complete a rebuild it was, I suspect not very, because in the past few months we've had to replace all the major sensors, including crank sensor, TPS, etc.Ĭurrently, it's not running, or barley running. ![]() My son's 2002 WJ has 200,000 miles on, with a freshly rebuilt motor.
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