You can check it while engine is running if you pull the expansion chamber/exhaust front off,then remove the pv cover and replace front pipe.then start and see what it does when you open the throttle,once it starts to move it should swing fully to the stop.ie.its pretty well either open/close,depending how much youre feeding it.
And its always oily in there.No issue unless pv is sticking or you like cleaning lol
Also check the vent pipe on fuel tank is clear and that you have good flow from petcock to carb.
Check main jet for blockage
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2013 ec200r
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