Engine cylinder leak-down test kit.

For detecting internal engine failures such as:

• Leakage from intake or exhaust valves.
• Leakage from piston rings.
• Leakage from cylinder head gaskets (detecting bubbles in the cooling circuit).

Measuring instruments with rubber protective covers:

• The first gauge measures the inlet air pressure (0-100 psi) after the pressure regulator.
• The second gauge measures the percentage (%) of leakage of the cylinder being tested.

Usage in gasoline engines with spark plug threads M12x1.25, M14x1.25 & M18x1.25. Can be used on nearly all cars and motorcycles. Comes in a storage and transport case.