White smoke coming from a motorcycle's exhaust can indicate several possible issues. Here are a few potential causes:
Condensation: If the bike has been sitting idle or hasn't been ridden for a while, it's common to see white smoke at startup. This smoke is typically caused by condensation in the exhaust system and should dissipate as the engine warms up.
Coolant leak: White smoke accompanied by a sweet smell could be a sign of coolant leaking into the combustion chamber. This might indicate a faulty head gasket, a cracked cylinder head, or another cooling system issue. It's important to have this addressed promptly to prevent further damage to the engine.
Burning oil: If the motorcycle is burning oil, it can produce white smoke. This could be due to worn piston rings, a faulty valve seal, or other internal engine issues. It's advisable to have a mechanic inspect the bike to determine the exact cause and make any necessary repairs.
Fuel-related issues: In some cases, excessive fuel entering the combustion chamber can cause white smoke. This can occur due to a malfunctioning fuel injector or a rich fuel-air mixture. A professional diagnosis is recommended to identify and resolve the specific problem.
It's crucial to have a qualified mechanic examine your KTM Duke if you observe white smoke from the exhaust. They will be able to accurately diagnose the issue and recommend appropriate repairs to ensure the motorcycle operates optimally and safely.