Is It Normal for Motorcycle Exhaust to Smell Like Gasoline?

[ClaraFitz]

It is not normal for motorcycle exhaust to smell like gasoline. A gasoline smell in the exhaust indicates that the air-fuel mixture is too rich, meaning the fuel is not burning completely. Reasons for an overly rich mixture: The air filter is clogged or the choke is not fully open, reducing the amount of air mixing with the gasoline. Improper carburetor adjustment, a high fuel level in the float chamber, or wear on the main jet needle and main jet nozzle can increase the annular area, leading to more gasoline mixing with the air. A clogged or improperly adjusted carburetor air jet can also cause an overly rich air-fuel mixture. Diagnosis and troubleshooting: During diagnosis, let the engine idle and suddenly close the choke. If the engine stalls immediately, it indicates that the mixture is too rich.