Leak down tool is simple to use due to having one easy to read 3.50" gauge with an adjustable air regulator and includes a -8 barrel valve injector fitting as well as a hose with a 14 and 18mm spark plug fitting on it.
Simply plug the leak down gauge into your air supply set the gauge to zero hook the quick coupling hose and check the leak down on the barrel valve or check cylinder leakage cylinder by cylinder.
Includes detailed instructions.