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  • Re: Rotax 503 engine lag

    by » 12 years ago


    Clutching at straws...but is the pump mounted where it wont vibrate on rubber mounts...upsets the flow I belive if it does vibrate,

    Also is the little plastic filter look a like fitted on the base of the main jet...again I believe its to stop the fuel frothing due vibration....its just possible you have a harmonic vibration at those revs.

    Nick.

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