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    2009 Hemi Misfire at Idle

    Yep, sorry to be an imposter but its an '09 Grand Cherokee 5.7L. I couldn't find much info over on the Jeep forums but its the same motor as the 2009+ RAMs so I came over here looking for advice. This forum is a great resource! To be fair, I've got a 2019 Ram 1500 ecodiesel sitting in my...
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    2009 Hemi Misfire at Idle

    After a full weekend in the workshop putting the Jeep back together I was finally able to start it up Sunday night. It ran a little rough and smokey at first, and threw a CEL but it eventually smoothed out as all the crud and oil that had gotten in during assembly had burned off. It also looked...
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    2009 Hemi Misfire at Idle

    After closer inspection I noticed that the pin that the roller spins on had shifted to one side and actually made it difficult to pull the lifter out of the bore. I had to use a pair of channel locks and slowly wiggle it out of its bore. I slid another lifter into the bore afterwards and it...
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    2009 Hemi Misfire at Idle

    It's always so frustrating when you have symptoms that nobody else seems to have had, I had to update it for the next person that gets to go through this. I read through the oil thread and it seems the consensus is the redline 5W30 which I do intend to switch to after I do a 1k mile break in...
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    2009 Hemi Misfire at Idle

    Despite me trying to rationalize it being anything but a failed lifter, I started tearing it down last week and discovered a failed exhaust lifter for cylinder 6. I decided to order a complete MDS delete kit with camshaft and the upgraded hellcat lifters in the hopes I never have to deal with...
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    2009 Hemi Misfire at Idle

    I got the blackstone analysis back today and the results look to be promising. Would this give the impression that my camshaft is probably fine? I may be comfortable replacing the lifters myself, I was just really dreaded the idea of having to do the cam as well.
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    Blackstone - used oil analysis

    Here's a high mileage example at 173k on a 2009
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    2009 Hemi Misfire at Idle

    A bit of an update: I took it to a mechanic for further diagnosis and they found compression on that cylinder was a little low, they said 70-80 vs 100-105 for others. I had them take the valve cover off and investigate further and they determine that the exhaust valve on that cylinder wasn’t...
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    2009 Hemi Misfire at Idle

    Part of me knew in the back of my mind that this was probably the issue, I was just hoping that maybe there was something I wasn’t thinking of that could’ve caused these symptoms. I do have some mechanical ability but mostly suspension, brakes, and maintenance. I’ve never had the heads off of...
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    2009 Hemi Misfire at Idle

    Hello, I've got a 2009 5.7L with 173k miles on that has been having issues with a shaky idle and occasionally a P0306 code that I've been chasing for a while and am not sure where to go next. Symptoms: Misfire at idle that goes away under load or above ~1k RPM, it is definitely a lot worse on...

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