Diagnostic Tools
Spark Plug Tester
Quick and reliable way to check if your spark plug is firing. Essential for small engine troubleshooting.
Price:$5.99
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Pros
- Instant yes/no spark confirmation without guessing
- Compact and lives in my mower troubleshooting kit
- Inexpensive compared to replacing parts blindly
Cons
- Only checks spark — won't diagnose fuel or compression issues
- Needs a grounded engine surface for accurate readings
This compact spark plug tester has saved me countless hours of troubleshooting. Simply attach it to the spark plug wire and you’ll immediately see if you have spark or not. Accurate, durable, and worth every penny.
Repairs Using This Tool
Boat Repair
Boat Engine Won't Start? Quick Marine Repair Steps
Troubleshoot common boat engine start failures with a practical checklist for marine DIYers.
Read repair guide →Lawn Mower Repair
How to Fix a Lawn Mower That Won't Start: Complete Troubleshooting Guide
Real-world steps to diagnose and fix a lawn mower that won't start. No spark? Fuel issues? We cover the most common problems and solutions.
Read repair guide →No Spark Problems
No Spark? Diagnosing Ignition Problems on Small Engines
How to troubleshoot spark problems on lawn mowers, generators, and other small engines.
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