A spark plug tester is an essential tool for automotive diagnostics. It is used to test the condition of spark plugs, which are responsible for igniting the air-fuel mixture in an engine. A spark plug tester can help identify worn or faulty spark plugs, which can lead to engine misfires, poor performance, and increased emissions.
Spark plug testers are available in a variety of types, including inline testers, inductive testers, and load testers. Each type of tester has its own advantages and disadvantages, but all of them can be used to test spark plugs for proper operation. Inline testers are the most basic type of spark plug tester. They are simple to use and relatively inexpensive. Inductive testers are more advanced than inline testers, and they can be used to test spark plugs under load. Load testers are the most comprehensive type of spark plug tester. They can be used to test spark plugs under a variety of conditions, including high voltage and high current.