KOOPOOL Spark Plug Tester, Ignition Coil Tester, Dual Hole 12V Engine Diagnostic Tool, 0–6000 RPM Adjustable Frequency, 12mm Spark Plug Socket with Safety Cover for Cars, Motorcycles, Lawn Mowers

KOOPOOL Spark Plug Tester, Ignition Coil Tester, Dual Hole 12V Engine Diagnostic Tool, 0–6000 RPM Adjustable Frequency, 12mm Spark Plug Socket with Safety Cover for Cars, Motorcycles, Lawn Mowers

• 🔧 Diagnose Ignition Issues Quickly This spark plug tester and ignition coil tester simulates real engine conditions, helping you detect misfires, rough idling, or startup problems. Ideal for mechanics, DIYers, and small engine repair.
• 🔄 Dual-Hole Design – Compare Plugs Side by Side Test and compare two spark plugs at once—perfect for checking used vs. new plugs. Get fast, accurate insights on spark quality whether you're working on cars, motorcycles, ATVs, or generators.
• ⚙️ Adjustable RPM (0–6000) for Realistic Testing Simulate different engine speeds to observe spark performance under load. The adjustable dial lets you test ignition coils and plugs more precisely—works best in dim environments for clear visibility.
• 🔌 Plug-and-Play Operation with 12mm Socket Compatible with nearly all 12V gasoline engines using 12mm spark plugs. Simply plug in, turn the dial, and observe the spark—perfect for garages, workshops, or home repairs.
• 🛡 Safe & Durable Construction Built with high-strength ABS plastic, this spark tester includes a transparent safety cover that prevents accidental shocks or splash injury. Withstands repeated use in professional or home environments.
• Important Usage Tips: Short spark plugs can be tested as long as they contact the metal clips and rings in the test hole. A slight tilt won’t affect the results. For longer spark plugs, add shims to ensure proper contact during testing(not included).
• Safety Note: Never open the protective cover while testing to avoid electric shocks.