Product Features & Benefits
WARNING: California’s Proposition 65

Combustion Gas Leak Detector Kit Includes: Test chamber with rubber bulb pump, combustion leak tester fluid and instructions packaged in a plastic box
Fast, economical and accurate method to test for combustion gas leaks from head gasket, cylinder head & engine block.
Dual chamber for improved accuracy and to reduce the risk of coolant contaminating the test
Works on gasoline & diesel engines
Indicates that a leak is present when the tester fluid changes color
Test results in the top chamber will provide an indication of a combustion leak

Instructions:

Step #1 PREPARE THE VEHICLE THAT IS TO BE TESTED

Drain some of the antifreeze out of the radiator until the water level is approximately 1-1/2 inches below the fill neck of the radiator.
NOTE: ANTI-FREEZE SHOULD NOT BE ALLOWED INTO THE LEAK TEST TOOL. If this happens, stop the test when the coolant reaches the red line (LEVEL) in the lower chamber. Clean the tool and retest.
NOTE: This step is necessary to provide a void in the top of the radiator for CO2 to accumulate.

Step #2 PREPARE THE TOOL FOR TESTING

Remove the cap from the top of the test chamber.
Pour the test fluid into the top chamber to the line marked, “CO2 leak detector.”
NOTE: Keep the bottle of test fluid capped to reduce the risk of contamination
Install the cap onto the top test chamber.
Attach the rubber bulb pump to the cap on the top of the test chamber.

Step #3 TEST THE VEHICLE

Start the car.
Insert the test chamber into the radiator fill neck until the rubber cone makes a seal with the radiator.
Squeeze the rubber bulb pump several times to draw the vapors from the radiator into the test chamber.
When the test is complete, remove the test chamber from the radiator and turn the vehicle off.

Step #4 CHECK THE RESULTS

If the test fluid turns yellow, then CO2 is leaking into the coolant system.
If the test fluid remains blue, then CO2 is not leaking into the coolant system.
NOTE: The presence of CO2 in the cooling system does not guarantee that the problem is solely a leaking head gasket. Other failures like, but not limited to a warped or cracked cylinder head could cause a positive leak test.
This tool identifies the presence of CO2, not the cause. It is the end users responsibility to determine the cause of the presence of CO2 in the coolant system.

Step #5 CLEAN THE TOOL

Pour the test fluid into a suitable container.
NOTE: Do not pour the test fluid into the original container. Contamination will occur.
NOTE: Check with your local government or recycling center on how to dispose of the test fluid. (Bromothymol Blue)
Disassemble the tool and flush with clean water only. Allow the parts to air dry.
NOTE: Do not use compressed air, paper or cloth towels. Contamination may occur.
When the parts have dried. Reassemble the tool and put it back in the plastic box that it was purchased with

Mastercool 43707 - Combustion Gas Leak Detector

Part #: MAS43707

Availability: Out of Stock

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