MODIFIED VACUUM TESTER We all use vacuum to test valve to seat seal. I use a handheld Mityvac in conjunction with an electric vacuum pump. By taking the vent cap off top of Mityvac, I was able to hook the pump directly to it. Now I have the ability to apply, hold and...
![MODIFIED VACUUM TESTER](https://enginepro.com/wp-content/uploads/2019/06/201906-Vacuumcheck.jpg)