1. Start with the Basics
* Fuel Tank:
* Empty tank: Check the fuel gauge and visually inspect the tank. If empty, fill it up.
* Fuel switch: Ensure the fuel switch is in the ON position.
* Fuel line blockage: Inspect the fuel line for kinks, debris, or cracks.
* Fuel Pump:
* Power supply: Check if the fuel pump is getting power. You can test this with a multimeter or by listening for the pump's hum when you turn the ignition on (with the key in the ON position, not the START position).
* Fuel pump relay: If the pump isn't getting power, check the fuel pump relay.
* Fuel pump operation: If the pump is getting power, listen for a humming sound when the ignition is turned on. If the pump isn't making noise, it may be faulty.
* Fuel Filter:
* Blockage: A clogged fuel filter can restrict fuel flow. Inspect and replace if necessary.
2. Digging Deeper
* Fuel lines: If the lines are clear and the pump is working, check the fuel lines for leaks.
* Fuel pressure regulator: A faulty fuel pressure regulator can cause low fuel pressure and affect carburetor operation.
* Carburetor itself: While less likely, the carburetor itself could have internal issues preventing fuel flow. It might be clogged with debris, have a faulty float valve, or a stuck needle.
Important Notes
* Safety: Always disconnect the battery before working on electrical components.
* Consult manual: Refer to your Suzuki 650 service manual for detailed instructions, diagrams, and specifications.
* Professional help: If you are not comfortable troubleshooting your motorcycle yourself, it's best to consult a qualified mechanic.
Additional Tips
* Smell the fuel: Can you smell fuel coming from the carburetor or fuel lines? If not, there's a fuel flow issue somewhere.
* Use a fuel pressure gauge: This will help you determine if the fuel pressure is within the specified range.
* Start troubleshooting from the fuel tank and work your way to the carburetor. This allows you to eliminate potential issues systematically.
By carefully working through these steps, you can hopefully identify the cause of the fuel delivery problem and get your Suzuki 650 back on the road.
