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2009 Viking Professional erratic idle

oldyammyguy

Newbie
Joined
Jan 31, 2020
Messages
1
Age
69
Location
1565 Lindsay Road Oxford Mills Ontario
Country
Canada
Snowmobile
2005 Venon 600
2009 VK professional
2012 Vector LTX
2016 Vector L XT
For a long tome now my 2009 VK professional will start and the high idle engages when it is a cold start. As soon as the warm up light goes off the engine drops down to low idle. All is good. I go for a ride and the engine gets warmed up and when I pull over the fast idle is back on and if you sit there for a while sometimes it will drop down to low idle and sometimes not. If it is on fast idle, you have to shut it off to engage reverse gear. No amount of idle adjustment helps. Suggestions?
 

you have sprayed with brake cleaner looking for air leaks at the carb boots?
 


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