What's the reason for a motorcycle not starting and making noise?
2 Answers
The reasons why a motorcycle won't start and makes noise are as follows: 1. Fuel system failure: Mainly caused by the fuel switch not delivering fuel, clogged fuel filter, carburetor not supplying fuel or having an overly rich fuel mixture, or bent fuel pipe issues. 2. Electrical circuit failure: Short circuits in vehicle electrical components (such as ignition switch, ignition coil, ignition module, or magneto failure), or open circuits caused by loose wiring harness connectors. 3. Air pressure failure: Insufficient cylinder compression, improper air intake resistance of the air filter element, engine intake/exhaust system failures, etc. 4. If any of the above problems occur, it is recommended to take the motorcycle to a professional repair shop for inspection and maintenance.
The motorcycle won't start and makes noise - this issue mostly stems from the electrical system. I encountered the same problem when helping my neighbor repair his old Yamaha. When you try to start it, you hear a clicking sound, right? Nine times out of ten, this indicates a weak battery causing the starter relay to repeatedly engage. I recommend first checking the battery voltage with a multimeter - if it's below 12 volts, charge it immediately. Another detail to note: oxidized battery terminals can cause poor contact, so sand the connectors and try again. If you hear the electric motor humming but the engine won't start, the starter motor gear might be worn and slipping. For electrical circuit issues, carefully inspect the fuse box, especially the 15A fuse on the main power line. If all else fails, it's best to take it to a repair shop and have the mechanic check the starter relay's working condition.
