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  1. #1

    block off injection and premix???????

    i just bought a speedster w twin 657s. i always see these for sale w blown motors. should i block off injections and premix? also alot of ppl looked at my(need info on 95 speedster ad) but only recieved 1 response from a non seadoo guy. anyone familiar w 657 engines could prob ans my question so please try to leave a little info there also. thanks

  2. #2
    A blown motor can be from a lot of things.

    It is up to you if you want to go premix.

    Most of the oil issues are from bad lines and cracked tanks. Premix will fix that, but it is a sledge hammer approach. Checking your oil lines will have the same effect.

    older tread, but info on both sides

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