What Three Things Should Be Checked If a Small Engine Fails to Start?

Published by

When a small engine won't start, check the three essentials: fuel, spark, and air. First, verify the fuel system by ensuring there's fresh gasoline in the tank. Old fuel that's sat for months can gum up carburetors and prevent starting. Check that fuel is reaching the carburetor by inspecting the fuel line and filter. Second, test the spark by removing the spark plug, grounding it against the engine block, and pulling the starter cord to look for a blue spark. A weak or missing spark indicates ignition problems. Third, inspect the air filter for clogs. These same principles apply to car engines. Learn about engine troubleshooting, recognize signs of engine problems, and follow the 7 troubleshooting steps.