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  1. #1

    Next problem: Oil leak and misfirering.

    With new plugs and oil I did some hours this weekend. It still misfires some times when driving at high rpm for a while, but found out that if I just let go of the throtle for 1 sec. It worked fine for a while again. When it starts to misfire the boost goes down to 5.
    Got back to my garage and looked at the motor and saw some oil that's not been there before.
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  2. #2
    Formerly Ultra250 TN Aquaholic6801's Avatar
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    Back out a lil bit and take some more pics , sounds like the oil is getting on the supercharger belt, we need to find out where the oil is coming from though..........what all did the remove when you had it in the shop?

  3. #3
    Not much better pics,but I will take off the seat cover at the back too see better. But it does not look good
    Anybody seen this before?
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  4. #4
    kman's Avatar
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    It's hard to say from just the pics but on the last one it looks like there may be oil leaking out from the valve cover. There are 4 "tabs" on the valve cover gasket and you are supposed to silicone where these tabs go when re-installing. You can see one of these tabs in the last picture. If you had the valve cover off and didn't silicone these tabs it could be leaking from there.

  5. #5
    Don't think it's been off, but it looks like the leak is where you say. I will take it off and but silicone on.
    Should the cover be fasten with any tourqe?

  6. #6
    kman's Avatar
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    This evening when I get home I'll scan the page from the service manual on this for you. Again, the oil could be coming from somewhere totally different. This was just a just a suggestion based on the pics.

  7. #7
    Silence! I Keel You! earthshaker's Avatar
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    Quote Originally Posted by sigga View Post
    Don't think it's been off, but it looks like the leak is where you say. I will take it off and but silicone on.
    Should the cover be fasten with any tourqe?
    Manual indicates 87 inch lbs for the cover bolts.

    How about taking some pics for us when the cover is off?????

    There is a couple of us that would like to see the size of the galleys/passageways that allow the oil down into the pan. Can you do that for us and take a good look while you have it opened up?

  8. #8
    Work done. Quite sure that there was a leak here. All the other "nubs" was glued a bit to the motor, but this one was loose. And it looked like it had leaked straight down to the comp. belt.
    But I think there some oil coming up from where the drive shaft goes in. (first pictures). I will dry it clean and check it next ride.
    Here som pics from under the cover:
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  9. #9
    kman's Avatar
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    Here is the page from the service manual, but it looks like you probably don't need it now. Let us know if this was the problem or it's leaking from somewhere else.
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  10. #10
    You nailed it. Thats a easy fix but the problem now is your belt has been slipping due to getting oil on it. You need to re tighten and clean the belt.

    Your loss of power was the belt smoking. Evidence is the black spots on motor, that is belt rubber.

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