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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28322
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Oil going into carb when running. bad ring or valve?

Customer Question

oil going into carb when running. bad ring or valve ?
JA: Thanks. Can you give me any more details about your issue?
Customer: onan model # ***** 1996 yr. gas model. it runs for about 10 min. then starts pouring asmoke out of exhaust. I took air filter off and it was soaked with oil. I left the filter off and it took about 15 min brfore it started leaking oil out of carb. I know it has oil bypass, could it be a valve or ring?
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Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.

Check the lube oil for being over full or smelling of gas and thin from gas contamination.

Expert:  Curtis B. replied 1 year ago.

Is fuel tank above the carburetor? A leaking needle valve in carburetor will let fuel enter the crankcase, and show up as oil in carburetor and smoke from exhaust.

Expert:  Curtis B. replied 1 year ago.

Was oil full of gas? Please rate and accept to cloase.