Burning lots of oil
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  1. #1
    Senior Member operose's Avatar
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    Hey guys my bike has been burning a lot of oil. Like, A LOT of oil. It leaks some too but on a 25mile ride i have to put in almost half a quart and I can fog up the main street of a quaint village in no time... Was hoping someone could help me figure out if it is the rings, or the valves, or if I should just do both while the engine is apart?



    Just pulled the head off and this is the nightmare fuel horror movie scene that awaited:













    Jontow said to flip the head upside down and fill it with PB BLaster to see if it leaks through. Going to do that tonight. Any other thoughts/suggestions besides "wow that's bad"? This head has only been on here for a couple hundred miles, and I cleaned it and the valves/piston before installing
    ITCB

  2. #2
    Senior Member macbig2k1's Avatar
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    I would say, that you will need new valve steam seals.



    But you should also remove the rings and check the measurements

    -> Manual page 4-30

    ->> out of spec -> change!

  3. #3
    Senior Member operose's Avatar
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    Thanks Mac



    If there is no significant scoring/glazing in the cylinder is it at all wise to just replace the rings and not doing anything else like honing/boring/replacing piston?
    ITCB

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  5. #4
    Senior Member n2o2diver's Avatar
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    You should hone the cylinder if you change the rings.
    Hidden Content

    2005 TW200 (SOLD)
    2013 DR650

  6. #5
    Senior Member niqhowie's Avatar
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    Looks like you burnt out the valve guides! I've seen this on my old chevy block. are those Holes on top of the valve? Or is that just from build up?
    "Peace be the journey"

    MY BIKE BUILD- Hidden Content

    -2012 tw200

  7. #6
    Senior Member macbig2k1's Avatar
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    The cylinder doesn't need to be honed, if there is no wearout.

    -> you can still see the cross-grinding and no scraps are touchable



    Some of my 125ccm divers has only changed the piston (is cheaper as to buy new rings, new clips, new pin) and the engine runs fine again.

    -> The cylinder was in a good condition.





    But check at first the condition of your cylinder/sleeve and the rings and than we can talk about the rest:

    - new rings or not

    - if new rings needed, hone or not

    - sleeve OK? If not, new piston





    After some hours of thinking (and a bit sleeping ) about it, I am really sure that you will need new valve steam seals.





    @ NIQHOWIE

    I think, that these "holes" are not holes.

    It looks like different heights of the oil carbon/carbon deposit

  8. #7
    Senior Member mtkd's Avatar
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    Cylinder should be honed if rings are replaced. The pattern created by honing helps seat the rings.
    -Szj



    2001 TW

  9. #8
    Senior Member elime's Avatar
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    I say do everything -- new rings and new valve stem seals. And while you have it apart lap the valves. And don't forget a new late model cylinder base gasket.
    Long live the internal combustion engine!

  10. #9
    Senior Member plumbstraight's Avatar
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    Quote Originally Posted by Tony View Post
    I say do everything -- new rings and new valve stem seals. And while you have it apart lap the valves. And don't forget a new late model cylinder base gasket.
    were the rings put in properly. If you line up them so the ends are in line it would be a problem. Just a thought.

  11. #10
    Senior Member elime's Avatar
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    I installed new rings on both or my TW's. I honed the cylinder and seated them per this guys instructions.



    http://www.mototuneusa.com/break_in_secrets.htm



    After 20 miles I changed the oil and it was loaded with metal flake. I have around 400 to 600 miles on each engine now and both seem to be running very well! Is this the best way to do it? I don't know. I don't think I would do this on a car engine -- way to much work to re do if it gets screwed up -- but on a simple engine like the TW200 if it has to be redone it is no big deal.
    Long live the internal combustion engine!

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