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    high pressure pump mercury optimax 225 humming noise

    Hi @ all, I have a mercury optimax 225, 2003, 201 h. since yersterday, suddenly my high pressure pump does a humming noise when I turn key to ignition... not every turn, but almost, sometimes there is the normal whhiiiip... if I started the engine and run for a few seconds, then turn the key...
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    Problems with main fuel pump relay on 225 Opti 2003

    Hi, we have problems the main relay whcht switches the fuel pump of our Optimax 225 (BJ, 2003, 108h) (trimrelais are identical) within the last 5 hours two of the relays blown ... :mad: each time the line (red circle) is concerned ... the plastic from the counterpart is fused to the plug ...
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