- 1. Professional leak down tester: quickly detect and diagnose common engine issues by accurately measuring leakage to identify the exact source of the problem. - 2. Easy read dual pressure gauges: test the cylinder pressure and leak rate with two 3 inch gauges. Ranges are 0-100 psi / 0-7 bar and 0-100% leakage, with accuracy of ±0.5% for clear, glance-ready readings. - 3. Universal compatibility: suitable for any petrol engine (domestic and import) with 10, 12 or 14 mm spark plugs. Ideal for motorcycles, trucks, and cars, especially where clearance is minimal. Includes M10 and M12 metal adapters for flexible setup. - 4. Easy operation: install the hose onto the cylinder pressure gauge manifold, optionally use the M10 or M12 adapter, connect the tester to an air compressor, and insert the other end into the spark plug wells. Open the regulator valve clockwise to diagnose by pressure and leakage rate. A reading manual is available for more details. - 5. Practical use scenarios: diagnose suspected compression loss on cars or trucks; perform leakdown testing on motorcycles with tight spark plug clearances; assess engine sealing (valves, head gasket, piston rings) to pinpoint failure sources.