50Cc Scooter Wont Start Has Spark And Fuel. This is a major reason why engines don't start, especially if you drive your scooter on dirt roads. It has good compression, more than enough fuel is getting into the engine chamber and spark plug has a nice spark.
4 fully chocked up silencer. It has good compression, more than enough fuel is getting into the engine chamber and spark plug has a nice spark. Disconnect vacuum line or lines at the manifold and plug the vacuum nipple (nipples) at the manifold.