mcman56 Posted 8 hours ago Report Share Posted 8 hours ago I have a 2016 300 4T standard model. It has started to produce a little pop in the exhaust when closing the throttle from small to moderate openings. The pop is not loud but sort of echos in the exhaust. It starts, idles and runs well but has become cold blooded so needs to run for several minutes before it will take any throttle when cold started. I checked valve clearances and cleaned the carb with no affect. This is with California pump gas. Has anyone experienced this? I'm not sure if I should go up on the pilot size or raise the needle. Carb access is not great on this bike. Quote Link to comment Share on other sites More sharing options...
lemur Posted 2 hours ago Report Share Posted 2 hours ago CV carburetor running lean, just like CV carbs were designed to do. You might try raising the needle if the problem happens at greater throttle opening. What does the spark plug look like? & does it smoke at the exhaust &/or is the engine full of carbon ? Quote Link to comment Share on other sites More sharing options...
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