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1999 xj angry crickets?

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Old 11-11-2018, 04:30 PM
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Default 1999 xj angry crickets?

Recently did an exhuast manifold, (Dorman with the expansion parts) just bought the Jeep but I swear this isn’t normal, it has this twittling sound and gets pretty loud past 1/4 throttle, especially under load, almost sounds like it goes with the valves, it’s not the flex plate, balancer, or in the belt drive, I’m at my wits end. Everything has been smoke tested for leaks. 200,000 miles. Any ideas? Distributor bearing?

Link: https://www.files-conversion.com/fil...f4a26ba943.mp4

Last edited by Gearhead877; 11-11-2018 at 04:39 PM.
Old 11-12-2018, 04:25 AM
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Have you checked all the rocker arms to see that they are all getting oil ? or maybe one is loose .
Old 11-24-2018, 12:15 AM
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A couple of arms had very minor play when i did the valve cover gasket, rest were no play. tried tightening the bolts but it seemed like it required too much force (thread locked probably) so i left them alone. everything is oiled.


Last edited by Gearhead877; 11-24-2018 at 12:18 AM.
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