puffing clicking grinding sounds and running rough!

Discussion in '2-Stroke Engines' started by linnix13, Sep 3, 2009.

  1. linnix13

    linnix13 Member

    so my engine(66cc slant head boost bottle 4100kms old) is runnign strange, it takes a block to start it and it wont start full choke anymore i have to leav it halfway and pedal till it fires up, it buzzes loudly on 90-100% throttle but is fine below that, and it vibrates and puffes and weezes and clicks if i run 0 throttle coasting with the engine engaged but going down a hill, also it makes grunting sounds and only has power from 20kph to 40kph then it gets an insane power boost from 40kph+ but any faster than 40kph and it runs like ****, is this just from being old and well used?

  2. nadroj

    nadroj Member

    it would say check the rings. you shouldnt let your 2 stroke just coast down a hill like that. it doesnt give the engine enough oil.
  3. little bird

    little bird New Member

    sounds like crank seal has push out/ or is shaged .obviously running lean,leaking inlet manifold or base gasket.
  4. GearNut

    GearNut Active Member

    It sounds to me that your crank case bearings are worn out and the crankshaft is wobbling about. There is no way a seal can grip a wobbling shaft and this will cause air leaks at the crank bearing seals, causing the poor performance and hard starting.
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