Performance Tool W86554 Inline Ignition Spark Tester

The Performance Tool W86554 Inline Ignition Spark Tester is a diagnostic tool designed to quickly test the condition of your ignition system at each cylinder. This simple yet effective tool connects directly between the spark plug and spark plug wire to provide a visual indication of spark quality.

Key Features:

• Visual spark detection - flashes a mirror image of ignition spark with engine running
• Brightness indicates voltage strength - brighter light shows stronger voltage to plug
• Quick troubleshooting of ignition problems including dirty spark plug connections, defective points, bad cables, and faulty connections
• Easy inline installation between spark plug and wire
• 5-inch spark plug connection length
• 8.5-inch overall tool length

This inline spark tester eliminates guesswork when diagnosing ignition system issues, allowing you to quickly identify weak or missing spark conditions cylinder by cylinder. Ideal for automotive, marine, and small engine applications.