That !$%/* head gasket leak keeps worsening!
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  1. #1
    Senior Member Guitarman's Avatar
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    I'm not looking for any help on that issue, I know the only way to get over it is to replace that piece of paper Yamaha used as base gasket.



    I just felt like sharing my disappointment. Last weekend, in an effort to slow the leak, I followed some advices I red here and retorqued the head bolts. Not by much, just 1/32 of a turn when possible. Guess what happened? The small leak that was first located to the front left side developed to the entire left side of the head!!! I thought that the oil was just "migrating" to the back of the head and cleaned the thing yesterday. I went for a 30 minutes ride this morning and checked the head again to see that the side and back (the gasket) was effectively leaking!



    My attempt to reduce the problem just worsened it! I have to change the base gasket sooner than I expected and I don't have much time on my hand for the next couple weeks. I'll have to keep a good eye on the oil level (I was already checking it before each ride) for sure.



    I'm mainly disappointed because when I bought my TW, I thought that because it was almost new, I would not have to do any wrenching but regular maintenance. It really "(*&/ me off to have to take that head of.



    Thank you for letting me share my feeling with you. I feel a little better already.

  2. #2
    Senior Member ronnydog's Avatar
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    This is a good time to add a Wiseco piston and see how the motor is wearing.



    Ronnydog

  3. #3
    Senior Member Guitarman's Avatar
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    Thank you ronnydog for the suggestion, but I'm not sure I want to compromise the reliability of the engine, which is one of the reason I went for a TW.

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  5. #4
    Senior Member pgilles's Avatar
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    Usually it's the base gasket that leaks, not the head gasket. If yours is leaking at the head area, take a look at your valve covers/o-rings and make sure they are tight and sealing...oil can weep out of those and travel down your head/cylinder and make it look like a different leak.
    Sold bike.



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  6. #5
    Senior Member Guitarman's Avatar
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    Thank you for correcting me pmtg. It's the base gasket that is leaking, of course. English isn't my first language, so I sometimes mix terms or words.

  7. #6
    Senior Member kj7687's Avatar
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    If you replace that base gasket, make sure you get a metal one, not another paper gasket.
    KJ, just KJ, ok.


    Current rides:
    2004 GMC Sierra 1500, 1999 Toyota 4Runner

    Past rides: 2015 Yamaha XT 250, 1997 Suzuki DR 200, 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee

  8. #7
    Senior Member Guitarman's Avatar
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    Don't worry kj7687. I've red the DIY thread many times since I bought the bike (at least 4-5 times) in order to help me to accept the fact that I'll have to remove the head and cylinder of an almost new TW.

  9. #8
    Member RingSteel's Avatar
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    Quote Originally Posted by ronnydog View Post
    This is a good time to add a Wiseco piston and see how the motor is wearing.



    Ronnydog


    Is there any benefit to the Wiseco piston instead of re-using the stocker?

  10. #9
    Banned qwerty's Avatar
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    Quote Originally Posted by RingSteel View Post
    Is there any benefit to the Wiseco piston instead of re-using the stocker?


    Higher compression, more power, premium fuel.



    Retorquing isn't "1/16 turn". Retorquing is using a torque wrench, slightly loosening the bolts, then retightening to proper maximum torque, in the proper sequence described in the manual.




  11. #10
    Senior Member elime's Avatar
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    If you want to take a chance of adding to your frustration try some of this stuff:







    After spraying it on 3 or 4 times without success it started to accumulate. When the engine was warm the stuff was kind of soft and gooey so I pressed it on to the junction of the cylinder and case. This greatly reduced the amount of leakage. On a long ride now, about 100 miles or more, it only leaks a couple of drops which is just enough to put off changing the gasket until next winter. Good luck!
    Long live the internal combustion engine!

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