50cc engine troubles, need some help...video inside.

[Kaneman]

Originally Posted by Rider

Running rich but what I find suspicious is that only half of the plug is black. It's not blowing any smoke when it runs right? Did you ever check your valve height? Run a compression check also.

It blew some smoke yesterday when I first started it before I rode it but then it seemed to be clean. I held my hand behind the exhaust for a bit and came up clean.

You're right, only half the plug is black...I didn't notice that.

I didn't check valve height or run the compression check. I'm wondering if I need special tools for that? Going to look it up in the shop manual...
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