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  1. #1
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    near Toronto, Canada

    Arrow How to relocate oil tank vent check valve so it doesn't dribble oil

    This is a small thing, but it keeps the insides of my Polaris PWC less oily

    The oil tank has a one-way check valve. This valve is designed to allow air into the oil tank as the oil gets consumed (slowly) by the engine.

    If the oil tank is very full (we all sometimes 'really fill the oil tank up'), then liquid oil works its way into the valve, and often the valve will slowly drool oil out onto the top of the oil tank. This oil eventually makes a small mess.

    My approach was to relocate the oil vent check valve up high inside the hull, so that gravity would keep the liquid oil away from the valve itself. The valve still works the same way it always did, just through a longer tube.

    The first three photos show the stock oil vent check valve on my Virage TXi oil tank. The oil tank was out of the ski for another reason.

    The rest of the photos show the relocated oil vent, strapped against the fuel filler neck. I installed an extended tube for the check valve, with two zip ties on each nipple.

    I sleeved a larger clear tube section over the small tubing to provide some additional crush strength where the large zip ties hold it to the filler neck. Since I made this change, neither Virage TXi nor MSX 140 has had any oil dripping from the vent valves.

    If you do this, make sure the tubing doesn't have a sag or low spot between oil tank and vent. Don't crush the vent tube.
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  2. #2
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
    Join Date
    Aug 2006
    did that like 5 years ago when i had oil injection,worked good

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