Question about Motorcycles
Posted by Anonymous on
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Posted on Jan 02, 2017
It is normal for the powervalves to leak, but it does depend on where it is leaking from.
The hose on the left side is the power valve chamber vent - it is normal for it to leak thick black oil from this hose.
If the leak is on the right side, and the oil is transmission fluid, then the seal on the actuator shaft needs to be replaced.
Excessive oil from the powervalve hose is a possible sign that the compression is low. Low compression equals lower exhaust temperatures and this can lead to incomplete combustion.
Posted on Jan 27, 2010
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