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  1. #1
    jbryzek's Avatar
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    relocation of spark flush valve

    Guys, on a project I am working on we need to move the flush (intake hose) to the inside of the boat so that you can hook up the flush adapter or hose internally rather than thought the back of the jet pump. On the Spark there is a separate intake 3/4" line that hooks to the pumps thrust and sends water to the front of the exhaust manifold while in the water and under power and cools the exhaust. This smaller 1/2" line that hooks to the flush nipple out the back of the pump seems to attach farther towards the aft part of the manifold and is used for flushing only. Does this 1/2" hose spit out water when the ski is under way out the back of the pump? or is it a 1 way inward only and just used for flushing? I am used to the yamaha system that is much more complex y adapter etc..peice. I am trying to find out if I can just cap it with a quick connect within the hull and only use it for flushing or does it need to expel water somehow as well when under way.

    The sea doo seems like I can leave the 3/4 exhaust intake as is stock from the pump and perhaps just move the flush connector internally with a quick connect on the end?

    pics on left is park and right is yamaha vx110
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  2. #2
    GasResearch-VT.SE's Avatar
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    It spits out afaik

  3. #3
    jbryzek's Avatar
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    Quote Originally Posted by GasResearch-VT.SE View Post
    It spits out afaik
    so you think this is almost like a blow off line? Similar to the old Yamaha that spit the rooster tail into the air? If that is true it sounds like I would still need to have it exit the hull somewhere to expel the exhaust water but put a ball valve in the line with a "Y" or "T" and then a separate flush inside the boat to be able to access it to flush the engine. That ball valve would be closed during flushing as to not just spray out the end of the thru hull

  4. #4
    it does flow water out and any relocation would be advised to keep it lower than the engine to aid in drainage

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