TE610 - 8AE 1994 - Engine knocks and buzz

Discussion in '610/630' started by bruce700, Sep 3, 2015.

  1. bruce700 Husqvarna

    Husqvarna Motorcycle:
    TE 610 8AE
    Hello together,

    since one week i'm hearing during the ride a knocking from inside the engine with a speed dependet buzz. Yesterday it get so loud, that i stop the engine, because I was afraid something goes damage.

    It sounds like a knock from the camshaft.


    This video i made last week. It was quiter at this moment, than today.



    Because i don't know enough about the bearing tolerances, i made some videos of the parts an would be very happy, if we finde the technical problem by this way together.


    AutoDeko at Camshaft
    Is it right, that the sping is very powerless like in the following video? Or could cause this the beat?



    Rocker arm clearance - defective bearing?



    Camshaft bearing - Too much clearance?




    Thanks a lot for your Help :banana:
  2. Theo Husqvarna
    AA Class

    Location:
    Lombardy, Italy
    Husqvarna Motorcycle:
    SM 610 I.E.
    Other Motorcycles:
    2001 YZ250
    I would replace the bearings of the camshaft.
    The spring of the auto deco doesn't look too weak to me and even if it was too weak, it could cause problems when starting the engine, but it shouldn't affect what happens later, as far as I know.
  3. rancher1 Husqvarna
    Pro Class

    Location:
    WA
    The auto decomp spring is supposed to be very weak to allow low rpms to overcome it.
  4. bruce700 Husqvarna

    Husqvarna Motorcycle:
    TE 610 8AE
    Hi together, ok, i have ordered some new spare parts for this bike.


    And so on i think, i have finde the reason for the knocking engine...
    [IMG]
    That's the the back chain slide. It Look's destroyed in my eyes ^^.


    Thus i ordered the following parts:

    - Back chain slide
    - Rocker arm bearings
    - Head gasket
    - Waterpump seal
    - Waterpump bearing
    - Camshaft bearings


    ... i hope, the replacing of this spare parts will be the solution for the knocking eninge :)