A drop in pressure on a test gauge indicates that there is a leak. The point of leakage can then be found by using a leak spray, such as Spray Test (AC2172), or with an ultrasonic tester. Nitro Trace™ gas, a combination of OFN with Hydrogen.
OFN (Oxygen Free Nitrogen) Automotive Testing – Basic Leak & Pressure Test Kit
Nitrogen Test Gauge with Ball Valve N2 Nitrogen pressure testing gauge AC2094
A/C Nitrogen Leak Test Kit For Refillable Bottles ACKIT2
A/C Nitrogen Leak Test Kit For Air Condition Machine Texa Swiss Made OFN Kit
ENGINE PRESSURE LOSS TESTER CYLINDER HEAD BLOCK & VALVE LEAK TESTING KIT
Common Rail Diesel High Pressure Tester Kit for Injector Leak Testing NEW
