I'll try out these tips this week. Here's a quick review:
I've got a new problem with my 70cc/biturbo, sprocket, ~75km/h 2000 targa... fast and loud!
Whenever I come to a stopsign it stalls! It runs fine at high speeds, has a good spark, good compression and gas flow.
It doesn't idle, ie/ I can't run the engine unless the back tire is off the ground and spinning a bit.
Keith: Check brake light.
Mitchell: Check for air leaks around carb.
(70cc worked fine for first couple hundred kms.)
Sean: Check clutch. Roll backwards/forwards...
Don: Clutch spring or clutch problems.
Sounds like it could be the clutch... I'll check it out. The 'ped seems to die as I decellerate. It pretty much putters down with the speed of the engine.