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  1. #1

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    Water in the oil after waterbox mod!!

    Went for a ride today after completing the waterbox mod and thru hull exhaust on my 06 rxp. Pulled the ski out of the water to change the plugs and when i pulled the dipstick I found muddy oil. I checked the oil yesterday and it looked brand new. My question is can the modded water box cause water to push back into the motor? I figure maybe if its no longer pushing the water out fast enough it has to go somewhere. I have no leaks that would cause it to intake water and the coolant level is still perfect and clean so im a bit lost as to where this came from. Any help would be great.


  2. #2
    daverxp4's Avatar
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    if i recall shibby mentioned about a witerization method that might fill your engine with antifreeze(water in your case) but that was with the engine not running and you have to pump a lot to fill it up to get it to fill the water box and get it to the engine.
    in your case engine is running so i don't know
    is there any water inside your hull?
    back pressure is always possible but many guys here on the forum are running modded waterboxes with no issues.
    keep us posted what you find


    and before you run your ski again or let it sit for a while and you think you got water in your oil A.S.A.P (IMIDIATELY)CHANGE THAT OIL 2 OR MORE TIMES.

  3. #3
    Got Boost? psycho rxp's Avatar
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    Don't ride it till u find the problem, change the oil a few times. Was it winterized? And by who?

  4. #4
    EZ Dock of Long Island Shibby1485's Avatar
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    leaking intercooler core?

    no... the waterbox mod can't make water go backwards into the motor...

  5. #5

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    The ski was never winterized. Im in Texas and it stays in the garage so it never sees cold temps. I did have some water in the hull, but not enough to even come out of the slot under the motor so i dont think it got into the filter, but im going to go tomorrow and reseal all my sponsons and exhaust exits just to make sure its not coming from there. Then change the oil a couple times and take it from there.

  6. #6
    GTXX's Avatar
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    Quote Originally Posted by Shibby1485 View Post
    leaking intercooler core?
    wouldn't that put water into the intake ports and not the oil?

    If the hull flooded, water could run through the crankcase breather hose and get in the oil

  7. #7
    Got Boost? psycho rxp's Avatar
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    Quote Originally Posted by GTXX View Post
    wouldn't that put water into the intake ports and not the oil?

    If the hull flooded, water could run through the crankcase breather hose and get in the oil
    .....or thru a worn driveshaft seal. It would have hydro locked if it went thru the intake, and had to get past the rings. You still have warranty left?
    Last edited by psycho rxp; 04-29-2007 at 08:57 AM.

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