

buddah
Lifetime Member
- Joined
- Apr 14, 2003
- Messages
- 1,483
- Reaction score
- 284
- Points
- 1,288
- Location
- Wetmore, MI
- Country
- USA
- Snowmobile
- '17 Sidewinder B-TX LE
O.K., I need someone smarter than me to explain this to me.......I know, not much of a stretch. For the last 2 seasons+ I have blown the oil seal behind the primary clutch due to excessive crankcase pressure. Our "local" dealer told my mechanic the sled needed a "valve job" to fix problem. Now I can understand how bad rings could cause blowby thus creating excessive crankcase pressure, but how the H*** can valves do that?