Features
- EASY TO USE: The Performance Tool W86554 Spark Tester easily connects between the spark plug and spark plug wire for quick and reliable testing of your engine's ignition system.
- IMPROVE ENGINE PERFORMANCE: By checking the condition of your ignition system at each cylinder, this tool can help improve engine performance with more reliable spark and efficient combustion.
- TROUBLESHOOT ISSUES: With a mirror image of ignition spark flashing, you can easily troubleshoot dirty spark plug connections, defective points, bad cables or connections, and more.
- VOLTAGE DISPLAY: This tool shows voltage to the plug, with a brighter light indicating a stronger voltage, making it easier to diagnose potential issues.
- UNIVERSAL FIT: The 5 in. spark plug connection and overall length of 8-1/2 in. make the W86554 Spark Tester compatible with most vehicles, making it a must-have tool for any garage or mechanic.
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Details were last updated on Apr 10, 2026 03:02 +08.