Injector blowback is a common problem with diesel engines. To remedy this, either a new copper washer needs to be fitted and / or the injector seat needs to be gently refaced before installing a new copper washer.

This tool is designed to easily remove / install copper washers in deep seated injectors.

To remove / install a copper washer, the protrusion of the split collet should be set according to the thickness of the seal to be removed / installed.