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Thread: SR50 Factory - starting problem when it's warm

  1. #1
    apriliaforum newb
    Join Date
    Oct 2012
    Location
    Czech republic
    Posts
    9

    SR50 Factory - starting problem when it's warm

    Hello. I have a sr50 factory, 40,000km. There was a problem with the water pump, it started all right.

    First I took off the injector and replaced the seal under my head.
    Then problems with idling and starting began.

    Then I built the engine, a new water pump, a new cylinder seal (0.8mm), a new injection seal and head.

    Now, if it's cold, it starts well and goes well behind the gas.

    After warming up after a few minutes, I must hold the starter for a long time before grabbing. It does not go very fast, runs for 1-2 minutes at idle and goes out.

    The pressure of the air pump is 110-120 psi. Some idea? Thanks

  2. #2
    apriliaforum expert
    Join Date
    Jun 2013
    Location
    croatia
    Posts
    2,227
    on 40000km chec the cylinder compression piston rings and check the compression of the engine and the air compressor when hot

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