Gas Leaf Blower: Running rough
If your leaf blower runs rough, first make sure there's fresh gas in the tank—old gas accumulates water and burns poorly. Replace the gas in the tank if it’s older than 3 months. Add fuel stabilizer to the tank to help keep the fuel fresh.
Perform preventive maintenance on the leaf blower. Preventive maintenance includes cleaning or replacing the air filter and spark plug. A dirty air filter will starve the engine of air so it will run rough. Oil and carbon deposits on the spark plug electrode can interfere with fuel ignition inside the cylinder—causing the engine to run rough. Cleaning the air filter and replacing the spark plug will help the engine run smoothly.
Cracks in fuel lines will cause the engine to sputter and run rough because the damaged fuel lines won’t be able to supply enough fuel to the carburetor. Check the fuel lines and replace them if you find cracks in the lines.
Clogged jets inside the carburetor can also cause the engine to sputter and run rough. If the engine still runs rough after doing preventive maintenance and the fuel lines are okay, then you may need to rebuild or replace the carburetor.
Replace the leaf blower carburetor
The leaf blower's carburetor mixes air and gasoline in the proper proportions to create a combustible gas. If the engine starts and then sputters, or doesn't start at all due to lack of fuel, you might need to replace carburetor. It's often more cost effective and practical to replace the carburetor rather than rebuild it.
Rebuild the leaf blower carburetor
The leaf blower carburetor mixes air and gasoline in the proper proportions to create a combustible gas. If the engine starts and then sputters, or doesn't start at all due to lack of fuel, you can rebuild the carburetor. Rebuild kits are available for most carburetors and contain essential components for rebuilding a leaf blower carburetor, such as diaphragms, seals and gaskets. You can sometimes fix a fuel supply problem by dismantling and cleaning a carburetor. Use the kit to rebuild the carburetor after cleaning it.
Do leaf blower preventive maintenance
Proper maintenance ensures that your leaf blower runs smoothly and works properly. Refer to your owner's manual for guidance in maintaining the leaf blower. Replace parts such as the air filter, fuel filter and spark plug.
Replace the leaf blower fuel lines
A leaf blower's fuel lines carry fuel from the tank to the carburetor and from the primer bulb to the fuel system. Fuel lines become brittle over time and can crack or break. Replace a fuel line that's brittle or damaged. Be careful to install new fuel lines on the engine the same way the original fuel lines were configured.
If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these instructions to rebuild it in less than 30 minutes.
The fuel lines on a leaf blower deteriorate with time and eventually can split or crack. You can remove and replace them yourself, following these instructions.
Follow these easy steps to prepare you leaf blower for long-term storage.
Follow this advice for caring for your leaf blower.