Dirt bike will not start?

Why wont my Mini Dirt Bike start?

• Hello everyone. I was on my mini dirt bike about a year ago and I turned it off. I went up to my uncles to ride it a month later and it would not start. Left it for about 6 months and finally had a look at it. Not sure why it will not start. I have cleaned all the fuel out of the tank and replaced it with fresh petrol with 2 stroke oil. 25:1 ratio. I have checked the spark plug and there is a spark. I have cleaned the carb out and petrol is running through to the engine. The first time I tried to start it nothing happened. But once I had cleaned out the carb etc, you could sere some smoke coming from the exhaust. Carb is clear and spark plug is moist. I know it's only a little 49cc chinese bike that tend to break but it should not break seeing as I have only ridden on it twice and for 10 minutes maximum each time. I was going to buy 'Easyspray' to spray on the carb and see if that helps. Any help would be greatly appreciated, thanks!

• Answer:

  sounds like something electrical that could be tough to fix... but 25:1 is really rich r u sure thats the right mixture u might want to look into leaning that thing out that could help.