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tetondrtbag

oil in the ignition cover

4 posts in this topic

i went to check my valves today and when i pulled the crank plug on the ignition cover , oil came out. a lot of oil. any ideas why?

thanks,

MD

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i went to check my valves today and when i pulled the crank plug on the ignition cover , oil came out. a lot of oil. any ideas why?

thanks,

MD

Its normal. :thumbsup:

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The main reason why is that that's the crankcase, and oil belongs there. The probable reason there was so much of it is that you hadn't run the engine in a while (your bike is most likely an '05 or earlier steel framed model, too).

Unlike two strokes, the actual central part of the crankcase is not a part of the intake tract, and needs no main bearing seals when it shares oil with the trans as the YZF does, and wouldn't need a seal on the ignition side anyway.

As to why there would be more oil after it stands for a time, read:

http://www.thumpertalk.com/forum/showthread.php?p=5221903#post5221903

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