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Blow By?

Discussion in 'Technical and Troubleshooting Torque' started by Envy-t, Aug 18, 2008.

  1. How much blow by is too much?

    By this I mean the mist of oil that eventually makes it's way to the airbox and down the breather tube? Just recently, after my muffler was punched, the tube has leaked a very small amount of oil twice, but in the previous 3 months had never leaked?

    The bike lives up high in the rev range, it's a 2fiddy afterall, and douesn't have any other noticable issues.

  2. Visible blow-by is too much.
  3. I took the airbox apart and discovered that the breather hose from the engine is linked to the airbox. I pulled it all apart and cleaned it, and found the little piece of foam in the airbox breather hose had had better days. I replaced it with another little piece. No oil yet.

    Looks like it was just years of seaping past the little foam filter.

    There was bugger all oil in the box, just quite a few years worth of sticky old oil on the sides.