Lisle 75500 Combustion Leak Detector Kit, Universal Cooling System Tester
- The Lisle 75500 Combustion Leak Detector Kit is a professional diagnostic tool used to identify combustion gases entering the cooling system, helping detect head gasket failures, cracked engine blocks, or warped cylinder heads quickly and accurately.
- Features:
- Indicating fluid changes from blue to yellow when exposed to combustion gases, providing clear visual confirmation of leaks
- Universal connection to vehicle vacuum lines; includes hand-vacuum adapter for post-2002 systems
- Tapered detector probe fits radiator filler necks for convenient vapor sampling during engine operation
- Durable design ensures repeatable accuracy and long service life in professional shop environments
- Includes:
- Detector probe with tapered radiator insert
- Flexible hose
- Container of indicating fluid
- Hand-vacuum adapter (no cross-hole) for modern cooling systems
- Specifications:
- Manufacturer: Lisle
- Part Number: 75500
- Function: Combustion gas leak detection in automotive cooling systems
- Detection Mechanism: Fluid color change from blue to yellow
- System Compatibility: Universal; works with vacuum lines or hand-vacuum pump adapter
- Indicating Fluid Volume: 16 fluid ounces (1 pint)
- The Lisle 75500 Combustion Leak Detector Kit can also be referred to as head gasket leak tester, block tester kit, radiator combustion leak detector, cooling system gas tester, and cylinder leak indicator tool.
Lisle produces innovative automotive diagnostic tools; the 75500 kit provides a simple, visual, and reliable method to confirm combustion leaks into the cooling system, eliminating guesswork and ensuring accurate diagnostics.
Q: How does the indicating fluid detect combustion leaks?
A: The fluid turns from blue to yellow when exposed to combustion gases, confirming leaks caused by head gasket failures or engine damage.
Q: How is the detector connected during testing?
A: Insert the tapered probe into the radiator filler neck, then connect to the vehicle’s vacuum line or use the supplied hand-vacuum adapter for newer systems.
Q: What types of issues can this kit diagnose?
A: It identifies combustion gas entry into the cooling system, commonly caused by blown head gaskets, cracked blocks, or warped cylinder heads.
