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  1. #1
    Nothin' runs like a Deere IowanGPR's Avatar
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    Exhaust leak problem.

    OK, last week I found a suspected leak of exhaust fumes onto my TB's and the wall between motor and waterbox/exhaust. And also the bottom of the hull (insde has it pretty bad too) I think that it leaked at the Dplate but there is no carbon present in the cooling jackets, so maybe around a bolt somewhere? I also had a bolt come 2 threads loose and break the muffler stay off underneath the muffler. It looks like its coming from there but please take a look at the pictures. anwyays I have a few questions

    Where could it have come from? (leak)
    What is the best way to clean TB's without damage? disconnect fuel line/electronics? or not? anyone with instructions?
    Will a new layer of copper spray seal the deal if the gasket leaked the carbon out? or do I need new gaskets around the Dplate?
    On the top of the head there is a groundwire and I'm not sure what it is for. I cannont find it in the OEM parts system anywhere. What is the ground for and where can I get the part number for a new screw?
    I lost this screw last time out should I just put it on the PV cover or replace the screw?

    I can't run until the problem is fixed I am ordering some new bolts b/c some where broken off and I suspect some weakend from vibrations.

    Also- please look at my nozzle thread. I need to find a good new one.

    Thank you in advance. My ski is now in the shop until this is resolved.


    Ben
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  2. #2
    Nothin' runs like a Deere IowanGPR's Avatar
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    pic of the screw im missing from the ground on the head
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  3. #3
    Chrisrokc's Avatar
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    That the ground for something. That can't be good.

  4. #4
    Nothin' runs like a Deere IowanGPR's Avatar
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    lol, oh i Know its bad, I remember filling that bad boy with loctite too


    i think it might be bilge as there is some water standing inside the hull.

  5. #5

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    I don't think what you are seeing is a exhaust leak, it's more likely aluminum dust from your broken mount mixing with the little bit of moisture.
    I have been down that road before
    Your ground wire will work ok on your power valve cover, if you pm your address I will drop you a bolt in the mail
    Neil

  6. #6

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    Quote Originally Posted by gp12 View Post
    I don't think what you are seeing is a exhaust leak, it's more likely aluminum dust from your broken mount mixing with the little bit of moisture.
    I have been down that road before
    Your ground wire will work ok on your power valve cover, if you pm your address I will drop you a bolt in the mail
    Neil
    Yep, IMHO it's alloy dust from the broken mount. You get the same thing to a smaller extent if the bolt is missing/loose and the two casting are rubbing together from engine vibration. Been there.

  7. #7
    Nothin' runs like a Deere IowanGPR's Avatar
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    Quote Originally Posted by kevski View Post
    Yep, IMHO it's alloy dust from the broken mount. You get the same thing to a smaller extent if the bolt is missing/loose and the two casting are rubbing together from engine vibration. Been there.

    glad to know, but how much should I worry about cleaning the TB's? I will have it apart this winter Just want to run the rest of the year maybe 2/3/4 times yet and will I be ok? glad its not an exhaust leak b/c im struggling to find where it would have come from!!! thanks guys. anyone else with opinions please respond.

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