Is high pressure better for finding leaks than low pressure?
Absolutely not! The slower the smoke is exiting the leak the easier it is to see the smoke. A machine that operates at 1½ PSI is not nearly as effective as a machine that is operating at ½ PSI. Since EVAP testing must be performed at 13 inches of water, (less than ½ PSI) any machine that is regulated to this pressure is a better choice for general testing as well.
