Under What Circumstances Should a Motorcycle Carburetor Be Replaced?

[McPaisley]

Motorcycle carburetors must be replaced under the following circumstances: Internal reasons: Severe wear of carburetor components affecting its performance, such as fuel leakage due to poor needle valve sealing, sharp increase in fuel consumption due to worn fuel needles, failure of vacuum diaphragms, severe air leakage from throttle valve wear, unstable idle speed when the engine is hot due to poor closing of the enrichment valve, etc. External factors: Use of low-quality gasoline or prolonged storage of gasoline in the carburetor leading to gasoline deterioration, gum formation, and green deposits. During carburetor operation, these impurities are carried into various internal passages, making cleaning difficult and severely affecting the normal operation of the carburetor.