If you have bad gas in your motorcycle, it can cause starting issues or poor performance. However, there are a few steps you can take to try starting your motorcycle with bad gas:
Drain the fuel: The first step is to drain the old gas from the motorcycle's fuel tank. Locate the fuel drain screw or valve on the bottom of the carburetor or fuel tank and carefully drain the old fuel into a suitable container.
Check the fuel filter: After draining the old gas, inspect the fuel filter. It may be clogged or dirty due to the bad fuel. If necessary, replace the fuel filter with a new one.
Add fresh fuel: Once you have removed the bad gas, fill the fuel tank with fresh, high-quality gasoline. Make sure to use the correct octane level recommended for your motorcycle.
Prime the fuel system: Depending on your motorcycle's make and model, you may need to prime the fuel system to ensure the fresh fuel reaches the carburetor or fuel injectors. Consult your motorcycle's manual for specific instructions on how to prime the fuel system.
Check the spark plugs: Bad gas can sometimes foul the spark plugs, making it difficult to start the engine. Remove the spark plugs and inspect them. If they appear dirty or worn out, clean or replace them as necessary.
Start the motorcycle: Once you have followed the above steps, try starting the motorcycle. Make sure the ignition is in the "on" position, the kill switch is in the "run" position, and the motorcycle is in neutral. Follow the standard starting procedure for your motorcycle, such as using the choke if required.
If the motorcycle still doesn't start or runs poorly after these steps, it's possible that other issues may be contributing to the problem. In such cases, it's advisable to consult a qualified mechanic or motorcycle technician for further diagnosis and repair.