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2 stoke engine , fuel mixing into auxiliary oil reservoir & engine oil tank

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  • 2 stoke engine , fuel mixing into auxiliary oil reservoir & engine oil tank

    2000 OX 66
    250 hp
    2 stroke


    bilge had a film of oil with a gas smell coming out ? ( head in bilge hours earlier no oil/gas mixing )

    upon inspection auxiliary oil holding tank was over filled, with gas ? , dumping into bilge

    engine oil tank also had a gas smell


    at this point don't know what's causing the 2 stroke oil too allow gas 2 enter ? or which way its coming from

    pulled VST tank months ago too install new fuel pump , ( did i do something wrong )

    is there a vent hose too release pressure , VST

    all nipples on VST have a oil hose attached , one hose I had too add a T to connect . More hoses then nipples

    float stuck inside vst
    check valve by oil pump

    should I install a check valve on gas line before it enters VST

    bottom line , fuel is entering oil system somehow
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