When your leaf blower won’t start, it can be frustrating—especially when you have a yard full of leaves waiting. Whether you’re using a gas, electric, or battery-powered model, most issues come down to a few common causes. With the right maintenance and troubleshooting steps, you can get your blower running smoothly again in no time.
1. Check the Fuel and Air Supply
For gas-powered models, start with the basics—old or untreated fuel is often the main reason your leaf blower won’t start. Gasoline can deteriorate in as little as 30 days, causing blockages and poor combustion. Use a fuel stabilizer for small engines like STA-BIL® Fuel Stabilizer to keep fuel fresh for up to 24 months. Also, inspect the air filter—if it’s dirty or clogged, replace or clean it to restore proper airflow.
2. Inspect the Spark Plug
A worn or fouled spark plug can prevent your engine from firing. Remove the plug and check for carbon buildup or moisture. Clean it with a wire brush or replace it if necessary. Ensure the plug gap is correct according to your leaf blower’s manual before reinstalling.
3. Examine the Carburetor
Old fuel can leave behind residue that clogs the carburetor. If your blower still won’t start after checking fuel and spark, remove the carburetor and clean it thoroughly using a carburetor cleaner. For long-term prevention, always run the engine dry after each season or add a gasoline stabilizer before storage.
4. Check the Fuel Lines and Primer Bulb
Cracked or leaking fuel lines can stop the flow of fuel. Inspect the lines carefully and replace any that look worn out. Make sure the primer bulb is working correctly—it should fill with fuel and not have any visible cracks.
5. Battery and Electrical Issues (for Electric Models)
If you have an electric or cordless blower, check the power source. Ensure batteries are fully charged and connections are clean. For corded blowers, inspect the cord for damage and test it with another outlet.
Regular leaf blower maintenance—including cleaning filters, changing spark plugs, and using a fuel stabilizer—can prevent most startup issues. By following these steps, you’ll save time, extend your blower’s life, and keep your yard looking tidy all season long.
