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Thread: Engine noise diag..

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    Senior Member Getting Dirty hoaxci5's Avatar
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    Engine noise diag..

    Help...

    http://www.youtube.com/watch?v=FUCrZ...JPP5PEpkt1Zkyg
    http://www.youtube.com/watch?v=jetiS...JPP5PEpkt1Zkyg

    I thought it was the flex plate, but I checked that all the bolts were tight and didn't notice any cracks..

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    Lifetime Member Getting Dirty 06JeepXKHEMI's Avatar
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    Sounds like a rod but its not RPM dependent right? Its to deep of a sound for a going lifter.. does it make the noise if you change gears?
    2K6 Limited Jeep Green Metallic/Saddle Brown Leather XK HEMI QDII Old Man Emu HD Suspension w/ Fox Emulsion 2.0 Rear Shocks 1.5" SpiderTraxx Wheel Spacers 265/70 GoodYear MTRs w/Kevlar True Dual Exhuast w/IMCO 50 K&N 63 CAI Diablo 91/Performance Transmission Tuned SA Belly Skid MOPAR Gas Tank Skid, Transfer Case Skid, Suspension Skid Front Tow Hooks 6k HID Lows/3k Fogs

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    Senior Member Getting Dirty hoaxci5's Avatar
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    I can't hear it when I'm on the gas and driving. As soon as I get off the gas it's there again, doesn't matter what speed I'm going at the time.

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    Lifetime Member Getting Dirty 06JeepXKHEMI's Avatar
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    Sent video linkto my dad, he knows these Jeeps like the back of his hand.. Sounds dumb but check you cat to make sure its not that rattling around and sending noise through dp
    2K6 Limited Jeep Green Metallic/Saddle Brown Leather XK HEMI QDII Old Man Emu HD Suspension w/ Fox Emulsion 2.0 Rear Shocks 1.5" SpiderTraxx Wheel Spacers 265/70 GoodYear MTRs w/Kevlar True Dual Exhuast w/IMCO 50 K&N 63 CAI Diablo 91/Performance Transmission Tuned SA Belly Skid MOPAR Gas Tank Skid, Transfer Case Skid, Suspension Skid Front Tow Hooks 6k HID Lows/3k Fogs

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    Lifetime Member Getting Dirty Matt's Avatar
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    Pick one of these up. It'll help you pinpoint where the noise is coming from:


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    Senior Member Getting Dirty hoaxci5's Avatar
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    Third video with some engine revving.. seems like it doesn't go away when you gas it, just speeds up and seems to get quieter..

    http://www.youtube.com/watch?v=U6vfJbAzaWI


    I pulled spark plug wires 4/5/6 individually and the noise didn't change.

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    Lifetime Member Getting Dirty Matt's Avatar
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    Is it more noticeable on the top of the engine?? Doesn't take long to pull that valve cover off and take a peak to see if its something obvious.

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    Senior Member Getting Dirty hoaxci5's Avatar
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    I wouldn't say it's more noticeable top or bottom, but for sure towards the back.

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    Lifetime Member Getting Dirty 06JeepXKHEMI's Avatar
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    My dad said the he thinks its the flex plate, it cracks from the inside out youll have to pull the transmission and converter to do it.. 2-3 hrs to do but it will tell you for sure.. Since it didnt change with plugs out he knows for sure its mechanical on the outside. What happens is the crankshaft starts dancing inside when its got some miles on it and the converter wont move so the flex plate does exactly that, flexs. Id say its probably that..
    2K6 Limited Jeep Green Metallic/Saddle Brown Leather XK HEMI QDII Old Man Emu HD Suspension w/ Fox Emulsion 2.0 Rear Shocks 1.5" SpiderTraxx Wheel Spacers 265/70 GoodYear MTRs w/Kevlar True Dual Exhuast w/IMCO 50 K&N 63 CAI Diablo 91/Performance Transmission Tuned SA Belly Skid MOPAR Gas Tank Skid, Transfer Case Skid, Suspension Skid Front Tow Hooks 6k HID Lows/3k Fogs

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    Super Moderator Getting Dirty 07JeepXK's Avatar
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    I'm thinking along the lines of what Andrew said.
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