i've got a 49cc mini dirt bike it starts some time but with a lot of smoke?

49cc mini dirt bike are only supposed to have 30mills or 2stroke to 1000 mils or petrol no more no less clean the spark plug with a wire brush then check the spark if no spark or is weak make sure the cdi is in its place n all bolts r tight and cut off switch is working correct

david g mcbikers
November 2008

2 stroke motors are hard on spark plugs, I suggest buy new plug, use good quality 2 stroke oil and do not use more than you are supposed to, check the exhaust for plugging up with carbon.

joseppie
November 2008

put in some 2 stroke quality oil

harry
November 2008

hi thanks for the tip why dosen't it start up when i pull it and the smoke only comes out with the each pull??

andy davis
November 2008

2 much 2stroke smoke bluish/grey

steray
November 2008