If a motorcycle is smoking after an oil change, there could be a few possible reasons for this issue:
Oil spillage: During the oil change, if the oil was spilled or improperly poured, it could come into contact with hot engine components and start to burn, causing smoke. It's important to ensure that the oil is properly drained and filled without any spillage.
Incorrect oil type or grade: If the wrong type or grade of oil was used during the oil change, it may not be suitable for the motorcycle's engine. This can lead to excessive heat and potentially cause the oil to burn, resulting in smoke.
Oil leakage: It's possible that there is an oil leak somewhere in the motorcycle's engine or oil system. If oil is leaking onto hot engine parts, it can cause smoke. Check for any signs of oil leaks, such as oil spots on the ground or visible oil residue on the engine.
Overfilled oil: If too much oil was added during the oil change, it can cause excess pressure and result in oil burning and smoking. Ensure that the oil level is within the recommended range specified in the motorcycle's owner's manual.
Other mechanical issues: Smoking after an oil change could also be an indication of other underlying mechanical problems, such as a malfunctioning piston ring or valve seals. These issues can cause oil to enter the combustion chamber, leading to smoke.
If you notice smoke coming from your motorcycle after an oil change, it's essential to address the issue promptly. It is recommended to consult a professional motorcycle mechanic to diagnose and resolve the problem correctly, as they have the expertise to identify the exact cause and provide appropriate solutions.