•Pinpoints low compression cause ie burnt valves, worn rings, etc
•Crank stopper locks engine in place to facilitate installation of timing belts & removal of harmonic balance pulleys
•Supplied with M14 x 1.25 hose end, M13 x 1.25 adaptor & M12 x 1.25 adaptor
•Gauges show % of cylinder leakage & cylinder pressure
•Suitable for use on any petrol engine with 14 or 18mm spark plugs
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