2 PCS Inline Spark Plug Tester, Straight Boot Internal & External Engine Ignition Tester Tool, Spark Plug Checker Small Armature Diagnostic Detector for Cars Trucks Motorcycles

Specification:Material: Plastic, MetalQuantity: 1/ 2 PCSColor: BlackWeight: 0.14/ 0.29 lbSize: 11.4 × 0.1 × 0.1 inchesFeature: Practical, Durable, ReliableFit Type: Universal FitWhy do you need this spark plug tester?-We provide spark plug detectors in 1-piece and 2-piece packages for you to choose from flexibly according to your needs.-This spark plug tester has a total length of 11.4 inches, enabling easy spark detection even in narrow and concealed spaces.-This car engine spark plug tester operates stably in high and low temperature environments, unaffected by temperature changes, and is built for long-lasting use.

• Practical Function: Ignition misfire can cause engine jerking and power loss. This spark plug ignition tester allows for quick diagnosis of ignition system and engine faults. It can be used to check for various issues such as loose spark plug connections, circuit failures, and damaged wiring
• Light Indication: This tester features a transparent housing with a built-in neon bulb. You can judge the working condition of the ignition circuit through the bulb's flashing state. Bright light indicates normal spark output, dim light means insufficient contact current, and no light shows no current passing through the circuit
• Excellent Quality: This spark plug tester features a probe made of high-quality metal, delivering high hardness and great wear resistance. The plastic light cover provides excellent insulation to enhance operational safety. The high-voltage resistant wire withstands current impact and resists cracking
• Easy to Use: First, turn off the engine and remove the spark plug coil. Then connect the black end of the spark plug tester to the spark plug, and insert the metal end into the spark plug coil. Finally, start the engine. The indicator light of the tester will flash if the ignition circuit works properly
• Wide Compatibility: This spark plug tester is compatible with various internal and external combustion engines. It suits cars, trucks, motorcycles, chainsaws, snow blowers, generators, and more. It serves as an essential repair tool for household maintenance, auto shops, and professional repair garages