What cause the motor smoke on one side of a banshee 350?

Motor smoke on one side of a Yamaha Banshee 350 can be caused by several issues, including a leaking oil seal, worn piston rings, or a malfunctioning carburetor leading to an improper air-fuel mixture. If the oil seal is damaged, it can allow oil to enter the combustion chamber, resulting in smoke. Additionally, excessive wear on the piston rings can lead to oil burning and smoke emission from one cylinder. It's important to diagnose the specific cause to prevent further engine damage.