Why Won't My Generator Start? - Causes and Fixes
Troubleshooting for a generator that won't start. Old fuel, carburetor, spark issues and low oil shutoff fixes.
Mike Chen •
Troubleshooting Repair Guides
Systematic troubleshooting for engines that won't start, run rough or die under load. Check fuel, spark and air before replacing parts.
9 articles available
Small engine troubleshooting follows a simple pattern: fuel, spark, air and compression. Check fuel freshness first (causes 80% of problems). Test spark with an inline tester ($8-15). Inspect the air filter. Compression issues are less common but indicate worn rings or valves. These guides help diagnose problems before throwing parts at them.
Common Troubleshooting Problems
Engine won't start
Check fuel, spark and air systematically. Don't skip basics.
Engine starts then dies
Usually fuel delivery issue. Check carb, fuel filter and fuel lines.
Engine runs rough
Dirty carburetor, bad spark plug or air leak. Clean and test each system.
Engine overheating
Check cooling fins for debris. Verify oil level and air flow.
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Fix a lawn mower that won't start. Step-by-step diagnosis covering fuel, spark, air and compression issues.
Tom Bradley •
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How to Jump Start a Lawn Mower, Tractor or ATV Safely
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