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Motor Ticking

Discussion in 'Wrangler TJ (1996-2006)' started by Warrenb, Jan 25, 2018.

  1. Jan 25, 2018 at 2:18 PM
    #1
    Warrenb

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    Warrenb [OP] New Member

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    I have a 2000 TJ. motor ticks constantly but have been told it is not the motor its self. motor runs fine but has that constant tick especially when it is cold like in the mornings. sometimes the longer it runs or is driven the ticking gets more quiet
     
    Warrenb, Jan 25, 2018
    #1
  2. Jan 25, 2018 at 3:27 PM
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    aggrex

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    aggrex Well-Known Member

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    Welcome to jeeps.net! Try some synthetic oil since they flow better in low temperatures. Constant ticking due to mileage or wear may not have dramatic improvement.
     
    aggrex, Jan 25, 2018
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    JKBob 25 likes this.
  3. Jan 25, 2018 at 4:06 PM
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    Prerunner1982

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    Prerunner1982 Well-Known Member

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    Cracked exhaust manifold will tick too.
    The 4.0 exhaust manifolds all crack.
     
    Prerunner1982, Jan 25, 2018
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    JKBob 25 likes this.
  4. Jan 26, 2018 at 6:56 AM
    #4
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Welcome aboard!
     
    chris4x4, Jan 26, 2018
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    JKBob 25 likes this.
  5. Jan 26, 2018 at 7:38 PM
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    JKBob 25

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    JKBob 25 Well-Known Member

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    Welcome to the forum Warrenb.
     
    JKBob 25, Jan 26, 2018
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  6. Jan 27, 2018 at 4:31 PM
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    mudbug85603

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    mudbug85603 Active Member

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    Be sure you're using 10w30 motor oil and a quality oil filter, like the Mopar oil filter. The 4.0 takes 6 quarts of oil no more no less. If there is more or less than 6 quarts the motor can tick. Exhaust manifold crack is a real thing and will happen to 90% of all 4.0 motors. Be sure the rocker bridge capscrews are tight to spec

    Capture 3.jpg

    It's also possible you have a broken piston skirt. That will be a louder ticking almost a quiet knocking sound.
     
    Last edited: Jan 27, 2018
    mudbug85603, Jan 27, 2018
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    OFFGRID, JKBob 25 and aggrex like this.
  7. Jan 27, 2018 at 4:59 PM
    #7
    2oldjeeps

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    2oldjeeps Well-Known Member

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    my 2000 has a "clatter" that quiets a little when warm. did it 16 months ago when i bought it at 168000. still same now at 176000, 8000 miles. some say piston slap,?? runs great,smooth, gutsie!!
    oh, using 15/40 t4 rotella,makes no difference what oil.
     
    2oldjeeps, Jan 27, 2018
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    OFFGRID and JKBob 25 like this.
  8. Jan 27, 2018 at 6:42 PM
    #8
    Offroad798

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    Offroad798 Well-Known Member

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    If its lifters its more of a ticking sound. If its piston slap its because the piston skirts are worn, cylinder worn etc, and sounds like a metallic sound (dull knock or tapping ) and is more noticeable when first started and may then go away or less noticeable after its warmed up. You do have a few miles on the engine so wear would be expected. Good luck
     
    Offroad798, Jan 27, 2018
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    OFFGRID and JKBob 25 like this.
  9. Jan 27, 2018 at 6:58 PM
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    JKBob 25

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    JKBob 25 Well-Known Member

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    Awesome advice given. Keep us posted. This could help others in the future.
     
    JKBob 25, Jan 27, 2018
    #9
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