TW makes a piston slap sound at high RPM...
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Thread: TW makes a piston slap sound at high RPM...

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    Senior Member Tw200quebec's Avatar
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    TW makes a piston slap sound at high RPM...

    all is good
    Last edited by Tw200quebec; 03-13-2019 at 07:52 PM.

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    Senior Member Nicoradv's Avatar
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    First question is how many miles is on it ?
    2nd has the engine ever been rebuilt and if so how long ago ?
    If a bike is plated, it's suppose to be ridden, not hauled on a trailer.
    2002 DR650SE, 2001 TW200

  3. #3
    Senior Member Tw200quebec's Avatar
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    motor never been open, change oil every 1k miles.
    Last edited by Tw200quebec; 04-27-2018 at 05:03 AM.

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    Super Moderator littletommy's Avatar
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    Are you sure it isn't a loose chain tensioner needing adjustment and it's just making noise under a load? Fresh gas? Non-Ethanol?
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    Senior Member Tw200quebec's Avatar
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    I run super non - ethanol gas, my bike is a 2007 automatic chain tensioner, no...?
    Last edited by Tw200quebec; 03-10-2019 at 05:08 AM.

  7. #6
    Senior Member Nicoradv's Avatar
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    Quote Originally Posted by littletommy View Post
    Are you sure it isn't a loose chain tensioner needing adjustment and it's just making noise under a load? Fresh gas? Non-Ethanol?
    What Tommy stated.

    Only way for it to develop piston slap is to have a bad lubrication system then with only that many miles on it.
    I am going to have to agree with Tommy, if not tensioner then something else.


    edit :
    Auto chain tensioners fail before they are suppose to.

    have not gone out and look at the one on my TW.
    But assuming its like the one on my DR.
    Take screwdriver and screw the tensioner in like you are going to remove it.
    You should feel spring tension and it should be smooth as the turn the screw that disengages it.
    Last edited by Nicoradv; 04-24-2018 at 07:15 PM.
    If a bike is plated, it's suppose to be ridden, not hauled on a trailer.
    2002 DR650SE, 2001 TW200

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    Senior Member scotti158's Avatar
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    Are the rubber pucks still between the fins? Might just be the fins resonating. Did you just add an after market skid plate? They can amplify the engine noise.
    Nicoradv and Dryden-Tdub like this.
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  9. #8
    Senior Member Tw200quebec's Avatar
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    OEM skid plates and all rubber pucks are in place.
    Last edited by Tw200quebec; 04-24-2018 at 07:58 PM.

  10. #9
    Super Moderator littletommy's Avatar
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    Valves in spec? Last time checked? Air filter clean? How's the plug? (in hopes it's something little and an easy fix) I really don't think it is piston slap at this point. You change the oil like I did mine, every thousand miles more or less so it probably doesn't have too much wear and tear... Hard core rider or a putt putt along kind of guy?
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

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    Senior Member Nicoradv's Avatar
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    Quote Originally Posted by Tw200quebec View Post
    OEM skid plates I will check for the rubber pucks, how many are there suppose to be?
    Mine doesn't sound like piston slap, it sounds like wheel bearings going out.
    Trying to lean over and listen to where its coming from, it stops.

    Try that, just lean over to each side and see if the sound stops.

    Still not sure that it is not the wheel bearings. So replacing them anyway.
    I'll look at the pucks also, that might be my problem.
    Does it off n on at about 60 mph or so.

    On the DR i cut up a bike inner tube and put a strip between each side of frame mount and skid plate.
    If a bike is plated, it's suppose to be ridden, not hauled on a trailer.
    2002 DR650SE, 2001 TW200

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