General description Compatible with all petrol engines, the Draper Vacuum and Pressure Test Kit (5 Piece) (35881) is designed for fault finding, including air leaks, incorrect valve timing, low turbo boost pressure, engine misfires, low engine compression, advanced/retarded ignition, air/fuel ratio, balancing carburettors, and improving fuel economy. Technical specifications Dual reading pressure gauge: 0-10 psi / 0-0.7 BAR Heavy duty rubber protector for gauge Other information Supplied in a plastic storage case