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Oil in Air Box
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   Maintenance and Repair -> EngineMessage format
Posted 2016-09-30 8:45 PM (#152641)
Subject: Oil in Air Box


Posts: 97
I seem to have a high crankcase pressure problem with my 1980 850 with 30,000 miles on it.
Engine runs fine, starts quickly.... but leaks oil from the crankcase vent tube , going to air box,
and airbox has oil in it. Problem is worse when doing interstate speeds of 70 +.
Is there any other explanation to this problem, other than high crankcase
pressure , and to do a top end job on it with new rings etc . ?
Hudson Valley , NY
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