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2008 400 trv artic cat


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Get WD-40 or similar... something that the engine can burn as fuel.... gasoline not recommended though.

 In a TRIGGER spray bottle, no aresol can. and spray the WD-40 around where the carb mounts and intake gaskets. if there is any change in engine speed or it blows smoke, you have a gasket leaking...

Be sure to spray the area liberally.

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It needs to be something dense. Air by itself won't work. Just use the aerosol can. As long as you use something that's not flammable, it'll be okay. 

What you're listening for is the idle immediately smoothing out temporarily. Use the spray to pinpoint the problem. 

A smoke test is much more efficient. 

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