1. Fuel system:
- Check the fuel level and ensure there is enough gas in the tank.
- Inspect the fuel line and fuel filter for any blockages or leaks.
- Clean the carburetor or replace it if necessary.
- Check the fuel pump and ensure it is functioning correctly.
2. Air filter:
- A dirty or clogged air filter can restrict airflow and affect engine performance. Clean or replace the air filter if necessary.
3. Spark plug:
- Check the spark plug and ensure it is clean and in good condition.
- Replace the spark plug if it is worn out or damaged.
4. Electrical connections:
- Check all electrical connections, including the battery terminals and ignition switch, to ensure they are clean and tight.
- Look for any loose or damaged wires.
5. Valves:
- Check the valve clearances and adjust them if necessary. Tight valves can cause the engine to run lean and difficult to start.
6. Compression:
- Test the engine's compression to ensure it is within the recommended specifications. Low compression can indicate worn piston rings or other engine issues.
7. Choke:
- Make sure the choke is working properly and is fully closing when you start the engine.
8. Idle speed:
- Check the idle speed and adjust it if necessary. The idle speed should be set according to the manufacturer's specifications.
If you have checked all of these items and the issue persists, it is recommended to have your Suzuki Eiger 400 diagnosed and repaired by a qualified mechanic.
