1. Welcome to Jeeps.net!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Jeep discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Jeep owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Tappet rattle.

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

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

    KIWI57 [OP] New Member

    Joined:
    May 15, 2022
    Member:
    #6469
    Messages:
    3
    Gender:
    Male
    Vehicle:
    2016 White jeep wrangler sport
    Bull bar, winch, tow bar and larger wheels
    Has anyone had a tappet rattle on 3.6 l motor. Thanks in advance.
     
  2. May 19, 2022 at 5:19 AM
    #2
    tomrr

    tomrr Well-Known Member

    Joined:
    Feb 24, 2020
    Member:
    #4406
    Messages:
    63
    Gender:
    Male
    First Name:
    Tom
    Vehicle:
    2012 Wrangler JK
    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.
     
    KIWI57 [OP] likes this.
  3. May 19, 2022 at 5:27 AM
    #3
    Groundfault

    Groundfault Well-Known Member

    Joined:
    Jul 4, 2021
    Member:
    #5769
    Messages:
    120
    Gender:
    Male
    First Name:
    Tim
    Vehicle:
    87 Wrangler, kind of...
    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.
     
    aggrex and tomrr like this.
  4. May 19, 2022 at 6:56 PM
    #4
    KIWI57

    KIWI57 [OP] New Member

    Joined:
    May 15, 2022
    Member:
    #6469
    Messages:
    3
    Gender:
    Male
    Vehicle:
    2016 White jeep wrangler sport
    Bull bar, winch, tow bar and larger wheels
    Thankyou.
     
  5. May 19, 2022 at 7:00 PM
    #5
    KIWI57

    KIWI57 [OP] New Member

    Joined:
    May 15, 2022
    Member:
    #6469
    Messages:
    3
    Gender:
    Male
    Vehicle:
    2016 White jeep wrangler sport
    Bull bar, winch, tow bar and larger wheels
    Thanks. It was a rocker failure. Having new lifters and rockers.
     
    aggrex, tomrr and JKBob 25 like this.

Products Discussed in

To Top