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Question:

Why is oil spraying out of Kawasaki KX250 tube?

i was wondering what would cause oil to lightly spray out of the plastic tube that hangs down out of the top end of the piston. the tube comes out of the top end right before the exhaust header bolts onto the piston.

Answer:

The link doesn't work - session is timed out. Always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer. I know what tube you are talking about. That tube is the breather hose for the power valve. As the piston rings start to ware, the oil in the premix doesn't get fully burned and accumulates on the power valve and lt's linkage. The engine is probably overdue for a top end rebuild and power valve cleaning. Remove the cover to see how much crud is in there. 2 stroke engines require rebuilds quite often, to prevent damage to the cylinder. If the top end is fresh, remove and clean the power valve. Otherwise clean the valve and replace the piston rings.
except this actual engine isn't comparable to another engine interior the worldwide a blown head gasket will blow coolant into the cylinder which will blow previous the jewellery into the crankcase. the different selection is a cracked head or case, that's a worst case situation. often if the water pump oil seal is going you will get oil interior the coolant with the aid of fact the oil is under greater rigidity than the coolant, direction of least resistance stuff. do no longer try this blind or on elementary propose, get a instruction manual. 30 greenbacks for a instruction manual is extra fee-effective than any restoration in case you screw up.

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