What Causes Smoke from a Motorcycle Exhaust Pipe?

[StHarmony]

Motorcycle exhaust pipe smoke may be caused by excessively high engine oil level. Blue smoke from exhaust pipe: During engine operation, light blue smoke is often visible at the tail of the exhaust muffler, accompanied by excessive oil consumption. Possible causes of the fault include: excessively high engine oil level; cylinder compression pressure below the specified value; increased clearance between piston rings and cylinder walls. Black smoke from exhaust pipe: When the engine is running, black smoke comes out of the exhaust pipe with a pungent gasoline smell, more noticeable during acceleration. Possible causes include: overly rich air-fuel mixture; faulty spark plug operation; delayed ignition timing. White smoke from exhaust pipe: During engine operation, white smoke emerges from the exhaust pipe. Possible causes include: water content in the fuel; moisture in the cylinder or muffler.