US PRO Cylinder Leak Detector For Petrol Engines 5256

Tester checks the amount of leakage in an engine cylinder & helps determine the source.

Best used when comparing a suspect cylinder to a known good cylinder on the same engine.

Equipped with dual gauges which show input pressure and percentage of leakage for accurate results.

Includes 12 & 14mm Spark Plug adaptors and quick connect hose with easy to adjust air regulator.