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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 (fig. 2)
• 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.
OPTIONAL
These products can also be used with Mastercool tool kits, 43300, 43301, 43302, 43305, 43306.
RADIATOR COOLING TEST CAP ADAPTER
2
43708
WITH VENT
43710
COMBUSTION GAS LEAK TESTER KIT WITH TEST
CAP ADAPTER
fig. 2
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