XiTuanYuan Cylinder Leak Down Tester Kit TU-21 – Automotive Engine Leakage Detector, Light Red

Overview

The XiTuanYuan TU-21 Cylinder Leak Down Tester Kit is a practical, hands‑on tool designed for quick insights into engine cylinder integrity. By measuring how much air escapes from a cylinder, it helps you understand potential seal or seating issues without immediate disassembly. The kit combines a robust gauge, a flexible hose, and a compact case to keep your diagnostic workflow organized and efficient.

Key capabilities and benefits

• Identifies potential engine faults such as piston ring wear, cylinder head cracks, valve wear, and head gasket concerns by evaluating leakage levels and patterns.
• Geared for real-world use, including trucks and engines with tight clearance, making it suitable for four-stroke powerplants in a workshop or on-site setting.
• Integrated pressure regulator and dedicated leakage gauge enable you to calibrate and read leakage values clearly while listening to the system for audible cues.
• Designed for straightforward operation: connect the hose to the cylinder, attach to a suitable air source, calibrate the counter, and observe the leakage reading on the gauge.
• Comes with a complete set of accessories and a protective case, ensuring you have the essential adapters and connectors for a variety of engines.

Practical use in daily diagnostics

In a shop or field environment, the kit supports efficient diagnosis of cylinder sealing and leakage sources. The 48 cm recoil hose adds flexibility when working in cramped engine bays, while the range of adapters helps you tailor the setup to different spark plugs and fittings. While it provides useful readouts and audible cues, results should be interpreted in the context of other diagnostic observations.

How to use (summary)

• Remove the Schrader valve, close the regulator, and prepare the air source.
• Attach the hose to the cylinder and secure the unit to the hose connection.
• Calibrate the leakage counter, apply compressed air (45–100 psi), and monitor the gauge while listening at the vehicle systems.
• Interpret readings to identify potential leakage paths and sources for further inspection.

Package contents

The kit includes a 48 cm recoil hose, 10 mm and 12 mm spark plug adapters, fixed connectors M14 x 26 mm and M16 x 26 mm, a cylinder leakage gauge, an air regulator, a user guide, and a sturdy case.