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Thread: GSX250 clunking noise? Please help

  1. #1
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    9th February 2008 - 12:40
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    Question GSX250 clunking noise? Please help

    Hi There,

    I have just brought an 04' GSX250 Its done 9800km

    It has just started to make a horrible clunking noise on de-celeration only (no braking) just engine braking.
    It is fine on acceleration and no trouble with changing gears.
    It did not do this on the test ride or on the ride home from Rangiora to Blenheim (around 300km). Just started on the weekend on a short ride, so its parked up in the shed till I find out what is wrong.

    So would anyone know what the clunking could be coming from??

    Cheers
    keep it on 1 wheel!!!!

  2. #2
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    4th November 2007 - 13:39
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    loose chain?

    plastic fabricator/welder here if you need a hand ! will work for beer/bourbon/booze

    come ride the southern roads www.southernrider.co.nz

  3. #3
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    5th February 2008 - 13:07
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    Yeah, get the chain checked. Do it soonish in case it comes off.

    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

  4. #4
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    5th February 2008 - 13:07
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    Yeah, get the chain checked. Do it soonish in case it comes off.

    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

  5. #5
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    5th January 2007 - 14:58
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    Where is the clunking coming from? Our one bottoms the front forks out very easily, that causes a clunking noise.

  6. #6
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    4th November 2007 - 16:56
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    My first thought was chain too, check the sprockets while your at it (front one in particular)
    Chuck it on the main stand and free wheel the back wheel, chain should have about an inch movement up and down in the centre point between the two sprockets all the time as you turn the wheel, look for tight spots in the chain and check each tooth of the sprockets for damage !
    Also check the wheel alighnment aint slipped out radically which might cause the chain to try climbing sideways onto the sprocket if it's a bit loose when you back off !
    A girlfriend once asked " Why is it you seem to prefer to race, than spend time with me ?"
    The answer was simple ! "I'll prolly get bored with racing too, once i've nailed it !"

    Bowls can wait !

  7. #7
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    7th November 2008 - 13:30
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    Quote Originally Posted by sinfull View Post
    My first thought was chain too, check the sprockets while your at it (front one in particular)
    Chuck it on the main stand and free wheel the back wheel, chain should have about an inch movement up and down in the centre point between the two sprockets all the time as you turn the wheel, look for tight spots in the chain and check each tooth of the sprockets for damage !
    Also check the wheel alighnment aint slipped out radically which might cause the chain to try climbing sideways onto the sprocket if it's a bit loose when you back off !
    My thoughts too. Be interested to know what you've found the problem to be

  8. #8
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    9th February 2008 - 12:40
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    thanks for your help sinfull

    I have just tried to tighten the chain as it is loose but it is already adjusted right out
    So I'm guessing the chain needs shortening now...... what is the best way to do this??

    cheers
    keep it on 1 wheel!!!!

  9. #9
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    21st October 2005 - 20:58
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    Quote Originally Posted by R6chick View Post
    thanks for your help sinfull

    I have just tried to tighten the chain as it is loose but it is already adjusted right out
    So I'm guessing the chain needs shortening now...... what is the best way to do this??

    cheers
    The only way you can shorten a chain is BUY A NEW ONE.

    The reason they lengthen is that the pins in the links wear...

    Now, 8900k, and a chain stuffed already? Heck, they obviously knew how to adjust it, but didn't know how to clean it!

    Replace the sprockets too. You may find your rear one looks like a Circular Saw Blade.... This caused clunks on deceleration too.
    Sprockets and chain are always replaced together.

  10. #10
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    Quote Originally Posted by quickbuck View Post
    The only way you can shorten a chain is BUY A NEW ONE.

    The reason they lengthen is that the pins in the links wear...

    Now, 8900k, and a chain stuffed already? Heck, they obviously knew how to adjust it, but didn't know how to clean it!

    Replace the sprockets too. You may find your rear one looks like a Circular Saw Blade.... This caused clunks on deceleration too.
    Sprockets and chain are always replaced together.
    Oh crap....
    ok, so Looking at the chain on it now it is a DID 520 o-ring
    is it better to use an o-ring chain??
    keep it on 1 wheel!!!!

  11. #11
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    Quote Originally Posted by R6chick View Post
    Oh crap....
    ok, so Looking at the chain on it now it is a DID 520 o-ring
    is it better to use an o-ring chain??
    Right, 3rd time lucky.
    Every time I try to reply, my computer crashes! Freaken McAffee Antivirus!!!
    Anyhow, I digress:

    O-Ring chains are a must on road bikes.
    Heavy Duty Chains do not have anything to stop grit getting between the pins and rollers.

    O-Rings seal in factory packed grease, and stop water and grit getting in there.

    Now, I am truly surprised yours has given up the ghost at such a young age, but I guess that can happen in a poor environment with little care.

    Now, the thing to remember is that you still need to put some lubrication on it to stop heat build up between the rollers and the sprockets.
    According to the Manual I had for my GSX 600, engine oil is great for this.... 30/40 none the less.... So, I actually use my "Good" Briggs and Stratton Motor Mower oil.

    Hope this helps.

  12. #12
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    9th February 2008 - 12:40
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    Quote Originally Posted by quickbuck View Post
    Right, 3rd time lucky.
    Every time I try to reply, my computer crashes! Freaken McAffee Antivirus!!!
    Anyhow, I digress:

    O-Ring chains are a must on road bikes.
    Heavy Duty Chains do not have anything to stop grit getting between the pins and rollers.

    O-Rings seal in factory packed grease, and stop water and grit getting in there.

    Now, I am truly surprised yours has given up the ghost at such a young age, but I guess that can happen in a poor environment with little care.

    Now, the thing to remember is that you still need to put some lubrication on it to stop heat build up between the rollers and the sprockets.
    According to the Manual I had for my GSX 600, engine oil is great for this.... 30/40 none the less.... So, I actually use my "Good" Briggs and Stratton Motor Mower oil.

    Hope this helps.
    OK Thanks quickbuck
    The Little gsx will be getting a new o-ring chain and sprokets AND tyres..... and its not even its birthday!!
    it better stop the clunking noise or i will be pissed off!!!!

    cheers
    keep it on 1 wheel!!!!

  13. #13
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    9th February 2008 - 12:40
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    Just though I'd let you guys know after pulling the chain and sprokets off I took the sprokets in to my local bike shop and they said they did not need replacing , so all I brought was a new x-ring chain and tightened to correct sag........ and no more clunking!!!!!
    Thank You all for your help!!!!
    keep it on 1 wheel!!!!

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