About this item 

• FITS YOUR VEHICLE -- It is compatible with gasoline 4-stroke engines and 12mm or 14mm spark. As long your vehicle has a standard spark plug socket, this set will work for you. 
• COMPARE CYLINDERS -- It best tests cylinder leak down and compression when comparing a suspect cylinder to a known good cylinder on the same engine. 
• EASY TO USE -- Remove the Schrader valve and turn the regulator off before applying shop air. Install the hose to the cylinder, the unit to an air supply, calibrate the leak gauge, and connect the unit to the cylinder hose. Diagnosis is made by observing the amount of leakage indicated on the cylinder leakage gauge and listening for leakage at various points of the car system. 
• Designed to detect a variety of common engine faults. including: Worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets. 
• Suitable for use on any petrol engine with 10, 12 or 14mm spark plugs. Tester checks the amount of leakage in an engine cylinder & helps determine the source. Ideal for testing trucks & late model cars where clearance is minimal.

• Tu-21 Engine Cylinder Leak Tester Leakage Detector 

  • This tester can readily locate a blown head gasket that a Compression Test will completely miss.
  • Their Cylinder Leakage Tester is reasonably well made and reasonably accurate tools for the DIY automotive mechanic.
  • This tester has two different connection, Input air and Output air to cylinder. The Input connects to your 90-100psi shop air compressor with NPR Quick connect couplers and the Output connects to the cylinder under test a special Test Hose. The test hose has 14mm male threads to screw into the spark plug hole (hand tighten only) and a NPR Quick connector to connect to the Tester's Output port.
  • 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 same engine. Ideal for testing trucks & late model cars where clearance is minimal. Equipped with 2-1/2\" input pressure gauge for proper leakage test setup and accurate results.
  • Package Size (LWH): 37cm x 27cm x 8cm/14.56" x 10.62" x 3.14"
  • Designed to detect a variety of common engine faults including: Worn piston rings, worn valves, cracks in cylinder walls and blown head gaskets. Available with either single gauge or twin gauge manifold. Gauges show % of cylinder leakage or cylinder leakage and cylinder pressure.
  • Suitable for use on any petrol engine with 10, 12 or 14mm spark plugs.
  • TU-21 Cylinder Leak Detector
  • Pinpoint the source of compression problems by doing cylinder leak-down tests Works with domestic and import engines Input and leakage gauges with rubberized housing.
  • Air pressure: 0-10 BAR, 0-140 PSI
  • Measures leak percentage from 0-100% 1/8\" NPT manifold ports
  • Package Content: 1 x Cylinder Leak Detector Set.