intake manifold

hello :) after repairing some stuff on my bike and when i went to try, it started but like it was full throttle. it did a little wheelie and the chain snapped out. i barely touched the throttle when starting it, just that tiny stroke to get the engine running. i changed the intake manifold and...

Hi, I recently bought a 2 cycle 80cc motor kit and installed it on my bike, but now when I try to ride, when I pull the clutch in the engine rpm's go sky high! Someone told me that it was an intake leak and to: "Remove the intake manifold where you bolted it to the engine, and replace the...