High Pitched Screetch...Uh Oh

Discussion in 'General Questions' started by Joshboy, Feb 18, 2008.

  1. Joshboy

    Joshboy Guest

    I just ticked over the 200 mile mark on my chinese 80cc this week when I noticed a really ugly screetchy-scratchy noise coming from the engine.
    My friend and I did some dirt biking through really dusty trails, and my first impression was that some dust or debris got into the piston cylinder.:shock:
    I tightened every nut and bolt up, but the sound remains. It seems to be getting worse too. It really sounds like nails on a chalkboard, and as my rpms increases, the tempo of the noise does too which makes me suspect my theory is correct:shock:Does anyone know what this could be?


  2. mickey

    mickey Guest

    Take the clutch cover off and see if the adjuster knob is scraping the inside of the cover.