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Thread: Adjusting valves on 2014 Yamaha cart
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Old 08-12-2023, 04:18 PM
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Quote:
Originally Posted by metoo21 View Post
So if the valves don't cause gas fumes in the exhaust (out of spec causing blow-by and incomplete combustion), then what could be the issue?
I didn’t see what year or carburetor or fuel injection. If carburetor I would be my N0 1 suspect after I checked spark plug, while I had spark plug out I would just replace it. Carburetor models will eventually run rich and puff black smoke due to improper fuel air mixture. Fuel injection hardly ever.