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acos2590

1992 Yamaha moto 4 350 Rough Start

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I have problems with my moto 4. When I start it up from a cold start and let it warm up it runs perfect but when it's warmed up if I kill it and let it sit for about 3-5 min it will take a while to get it to start back up and once it starts up it will smoke for a few seconds. What is the cause of this? And how can I fix it?

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the carb could need a cleaning, or adjusting (float) and check all your vent lines, especially from the crankcase. most quads will smoke for a couple seconds at startup, not a big cloud, but just a puff or two ...this is the big bear moto 4 ?

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I would agree, check the carb. Sounds like the bowl is drying up. Check the float.

* Added issue to thread title.

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