VEVOR Engine Cylinder Compression Tester Kit, 0-700 PSI Pressure Gauge & 0-100 PSI Leak Gauge, Automotive Leak Down Tester Kit with 4 Adapters, Pressure Check & Leakage Rate Test on Cars, Motorcycles

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Good price and fast delivery, however the case of the tool is cheap plastic and one of the latches arrived broken.. this was a bummer cause now I have to play with the broken part every time I reach for it and it's not a universal latch easy to just repair.

I purchased this VEVOR Compression and Cylinder Leakage Tester Kit hoping for professional-grade performance, but unfortunately, it falls short of industry standards. First, the included instructions are poor. They appear to be written by someone unfamiliar with the tools or the actual testing procedure, as they omit critical steps and fail to explain the proper application of the various adapters included in the kit. For example, the included instructions fail to describe the contents or application. They also make no mention of steps involved in a Cylinder Leakage Test or the fact that the schrader valve must be removed prior to testing. More importantly, the pressure loss gauge, regulator, and/or hose used for the leakage test cause the test results to be inaccurate. When connected to my air compressor and regulated to 100 psi, the leakage gauge only registers half of the expected pressure even under 100% leak conditions (this is without even screwing the hose into the cylinder, in other words we should see a maximum leak rate close to a 100% and instead only have approximately a 50% leak rate). Because the gauge fails to maintain the standard 1 psi to 1% leak ratio, the results are unreliable. I tested this on cylinders with known leaking exhaust valves, and the gauge provided the same readings as it did for healthy cylinders, rendering it ineffective for diagnostic work. I cannot recommend this tool for accurate engine diagnostics.