MOPED ARMY

I would think that there might be three possible problems, other than vacuum leaks.:

Not enough air

not enough fuel

timing off spec.

The air problem could be fixed by tightening up the throttle cable adjustment. This is not really a proper fix but it might lead you in the right direction

Not enough fuel might mean a needed larger idle jet. I know you went up in size but you might need to go further. Also, have you checked the float level in the carb? If the fuel level is too low it will effect the idle.

Have you checked the timing?

On re-reading I think The Silver One may know better

also, what do you mean by checking the float level in the carb? Can that be adjusted?

Yeah shouldnt the wheel not spin when youre up on the stand?

FYI, according to "2 stroke performance tuning" idling requires a 1:8 to 1:10 fuel to air ratio, while normal running requires a 1:14 to 1:16.

So maybe feel free to get a little more rich there. Also, if its piston port, it will naturally have a relatively poor idle.

the porting isn't that crazy at all. when you say "mani" are you referring to the intake manifold? If so I am running a crazy custom intake made by Nate squid that I bought off Creature Graham. I have some suspicion this thing is causing me problems. The other thing that seems fishy to me is the rubber coupler that connects the carb to intake, it just doesn't seem that tight to me on the carb side, although when I spray carb cleaner on there I get nothing. The hose clamp is tightened all the way down on that fucker.

brennan, i called you this morning. I also just covered everything in liquid gasket.

i've read that people have 55idle jets on their 65cc metras...

try messing with the idle/pilot jet....go bigger if it gets worse go smaller.....i read that people are using 55idle jets on the 65metra's and it's been going great for them...