Electronic ignition spark tester Check for spark on gasoline engines Used in import and domestic cars trucks plus small engines Lifetime limited warranty Check for spark on gasoline engines used in import and domestic cars and trucks plus small engines.
I own an automotive repair facility that employs 3 other technicians and I have been using spark testers for over 30 years and I have tried them all:1. The plastic encapsulated ones (not reliable or accurate)2. The "In Line" type - NEVER - NEVER USE THESE!!It only takes around 10,000 volts to "light" those up - but todays cars need upwards of 50,000 volts so you'll have a "light" but not enough volts to fire the spark plug.3. I have had 2 OTC 6589's in my box fo..
