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Tappet rattle.

Discussion in 'Wrangler JK (2007-2017)' started by KIWI57, May 15, 2022.

  1. May 15, 2022 at 10:51 PM
    #1
    KIWI57

    #1
    KIWI57 [OP] New Member

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    Has anyone had a tappet rattle on 3.6 l motor. Thanks in advance.
     
    KIWI57, May 15, 2022
    #1
  2. May 19, 2022 at 5:19 AM
    #2
    tomrr

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    tomrr Well-Known Member

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    No, But try add some Marvel Mystery Oil next oil change. I have been using if for 50 years in every thing I own. Can't32602593_1664892756909825_8191468013271121920_n.jpg hurt.
     
    tomrr, May 19, 2022
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    KIWI57[QUOTED][OP] likes this.
  3. May 19, 2022 at 5:27 AM
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    Groundfault

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    Groundfault Well-Known Member

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    5.7 V8 with Whipple Supercharger, TH350 w/B&M Shifter, NP205 TC, Dana 60 front 4.56, GM 14 bolt 10.5 rear 4.56, 4 wheel discs, Bilstein shocks, 6" lift on 37's, Autometer gauges, all led lighting and a few other things.
    Ticking noise can be caused by a bad lash adjuster (hydraulic self adjusting lifter) or a bad rocker. They're not solid lifters (tappets) and there's no manual lash adjustment on them. Not uncommon in the 3.6L. Sometimes lash adjuster noise will go away with fresh oil and filter (or a little Marvel Mystery Oil). Low oil pressure can make them tick and dirty oil can clog the adjuster. Worn rockers are also pretty common. Bad rocker can cause excessive wear on it's lifter, or rocker wear from bad lifter. They're easy to change once you finally get to them, so I'd change them as a set while you're in there.
     
    Groundfault, May 19, 2022
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  4. May 19, 2022 at 6:56 PM
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    KIWI57

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    KIWI57 [OP] New Member

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    Bull bar, winch, tow bar and larger wheels
    Thankyou.
     
    KIWI57, May 19, 2022
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  5. May 19, 2022 at 7:00 PM
    #5
    KIWI57

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    KIWI57 [OP] New Member

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    Bull bar, winch, tow bar and larger wheels
    Thanks. It was a rocker failure. Having new lifters and rockers.
     
    KIWI57, May 19, 2022
    #5
    aggrex, tomrr and JKBob 25 like this.
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