This differential pressure tester comes complete with on-off safety valve to eliminate pressure when disconnecting from the cylinder. Can be used to check intake or exhaust valves, cracked or worn rings, defective cylinders, worn bushings, etc. Specifications: Orifice size is .040". precision gauges matched to within +/-2%. Includes 18MM Spark Plug Adapter, 24" pressure hose, and complete instructions. Protective form-fitted hard case included. Factory calibrated.
NOTE: The ATS 2E Differential Pressure Tester has a .040” orifice and is the appropriate tool for ALL Textron Lycoming engines as indicated in their Service Instruction SI-1191A. Teledyne Continental engines requires model 2EM to comply with their Service Bulletin SB03-3. For all other makes of engines, consult FAA AC43.13 REV 1B for guidance in selecting the proper instrument for your engine.
Shipped quickly and well packaged. Really pleased that the gages read the same through out their range.