ANCEL SP02 Spark Plug Tester Automotive Engine Ignition Coil Tester Dual Holes 0 to 6000RPM Adjustable Working Frequency Car Spark Plug Gap Tool Vehicle Tool Kit

DUAL SPARK PLUG COMPARISON FOR FASTER IGNITION DIAGNOSIS – Compare two spark plugs side by side under identical test conditions to quickly identify weak or inconsistent ignition performance. The SP02 helps users visually check spark strength differences in real time, making it easier to isolate faulty plugs and support faster, more confident ignition system troubleshooting REDUCE GUESSWORK BEFORE REPLACING PARTS – Designed for diagnosing misfires, hard starting, rough idle, and weak combustion issues. Instead of replacing parts blindly, users can test spark performance first to confirm condition, helping reduce unnecessary repairs and improve maintenance accuracy for gasoline engines and small equipment ADJUSTABLE RPM SIMULATION FOR REAL-WORLD TESTING – Built-in control knob allows simulation from 0–6000 RPM, enabling spark observation under different operating conditions. This helps users evaluate ignition stability at low, medium, and high engine speeds for a more realistic diagnostic experience in workshop or garage environments WIDE COMPATIBILITY FOR 12V GASOLINE ENGINES – Works with most 12V gasoline-powered systems including cars, motorcycles, ATVs, lawn equipment, generators, and small marine engines. Supports spark plugs with 33–43 mm length and insulator diameter under 12.2 mm. Always verify dimensions before use to ensure proper fit and stable testing COMPACT, SAFE & WORKSHOP-READY DESIGN – Durable housing with a transparent protective viewing cover allows clear observation of spark activity while helping reduce exposure during operation. Lightweight and portable design makes it suitable for garage, workshop, and home use, with easy storage and quick setup for routine diagnostics COMPATIBILITY NOTICE (IMPORTANT BEFORE PURCHASE) – This spark plug tester may not fit plugs outside the specified size range or certain specialized ignition systems. Compatibility varies by engine design and plug type. Please confirm dimensions before use to ensure accurate testing results and safe operation (Please contact the official website of ANCEL for assistance. We are available 24 hours a day to answer your questions.)