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    Misfire after rev limiter

    It never dropped below 40 on the gauge, so plenty good.
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    Misfire after rev limiter

    I checked the jeeps oil after I got home on my motorcycle and it's about a quart over full. Not a good sign to start. Pop the oil cap and fire it up.... I don't think you can get any more proof of a cracked head. When I first got it to my friends house, about 20 minutes from the point of...
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    Misfire after rev limiter

    Cool, I've got some research to do. Thanks for the pointers, I'll come back if I find anything.
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    Misfire after rev limiter

    Is there a sure way to verify a cracked head or no without pulling the head? How does the crack normally present? 400 miles in was the last time I looked at the oil and there's no milkshake or anything. Does it leak into the intake and steam clean a cylinder? Edit: Also, I've had it wot a fair...
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    Misfire after rev limiter

    The fact it was a light switch for those 2 cylinders before and after definitely makes me think it's a digital signal of some sort, not an intermittent like a weak spark.
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    Misfire after rev limiter

    Wasn't sure if filling the profile added it as a signature, info here: It's a 2001 Sahara with the 4.0 and a 3 speed auto. 180k miles. Using a little coolant but there's no contamination so I'm not worried there.
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    Misfire after rev limiter

    Just brought my new jeep home to MN from Denver, now begins the fun of learning all about it. The previous owner mentioned he put new plugs and a coil onto it to try curing a misfire. On the way home at about 2am I saw a fire half a mile down a gravel road. Whipped around a hammered it, in case...