Diagnose and compare two spark plugs at the same time with this Performance Tool W3003 Spark Plug Analyzer. It has an adjustable RPM range of 500 to 6,000 RPM, and it works with nearly all gasoline engine spark plug types. Stay safe using the protective cover that protects you from the live electrical components. This analyzer helps you diagnose a wide range of fuel- and spark-related problems. Avoid the guessing game of ignition diagnosis with this handy spark plug analyzer.

Product Features:

• It has an adjustable RPM range of 500 to 6,000 RPM, and it works with nearly all gasoline engine spark plug types.
• The spark plug tester has dual test holes to help compare the spark strength of two plugs at once
• Adjustable RPM range from 500 to 6000 RPM
• The spark plug tester works with nearly all gasoline engine spark plugs
• Protective cover safeguards the users from accidental contact with live electrical components
• Helps diagnose a wide range of fuel and spark related issues