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Knocking noises from crank area.

foyfoy Posts: 296
edited March 2014 in MTB workshop & tech
I purchased a trek mountain bike off ebay and the bike is in as new condition, i keep getting knocking noises from the crankset area of the bike when pedalling. I have checked the crankset for tightness and all is ok, i have also checked the seatpost for tightness and pedals and greased both of them, also checked the front and rear quick release on the wheels and these are fine. I only get these noises when pedalling and they come and go and are not there all the time. I would be most grateful for any help or advice

Posts

  • cooldadcooldad Posts: 32,599
    What crankset?

    In fact what bike?
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

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  • foyfoy Posts: 296
    Trek 3700 mountain bike 2009 model, suntour crankset.
  • robertzeerobertzee Posts: 21
    Happened to me with a Trek 4300. The left crank arm was loose and had worn. I kept tightening it up but to no avail so fitted a new crank arm. problem solved until I upgraded to SLX. Might be worth checking out.
    You may be too old to rock but never too old to roll.
  • cooldadcooldad Posts: 32,599
    That would be my first guess as well.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
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