butto from australia

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butto

New Member
Jul 17, 2010
4
0
0
australia
G day all just got my first 2 stroke 66cc cruiser goes tops but seem to be havin a bit of a prob with it staggering when im cruisin goes ok when on the gas, plug s ok wonderin if could be electrics they look bit suss ,as it was a second hand bike
 

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
11,837
252
63
up north now
Welcome. What you have going on there sounds like it's four stroking. It is normal for this design to four stroke at cruise, and is especially noticeable until the engine gets a few hundred miles on it.

Have a look at your plug, and if it is really black and oily, then you'll need to make a couple of small changes.

Use a break in mixture of 24:1 at the very lowest! Do not use a 16:1 mixture.
 

butto

New Member
Jul 17, 2010
4
0
0
australia
nice to be ear its been run in and been runnin 25:1 plug is fine fuel clean , dose the same most of the time when cold thats labour a bit,wonder about CDI unit cheep to repplace one prob sorted, but as ya say aint broke!
thanks mate.