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Check To Ensure Your Cooling System Is Always at Its Best With a Simple Test Kit
Use a cooling system test kit to perform air pressure tests on the radiator or coolant reservoir of any vehicle. AutoZone stocks the best cooling system test kits for cars and trucks in addition to a wide selection of replacement parts. If you suspect that the radiator in your vehicle is leaking or that the head gasket is blown, you should try a pressure test kit.

Find the Right Test Kit for Your Vehicle
A test tool pumps air pressure into the cooling system to simulate conditions when a heated engine expands coolant and builds up pressure. These kits are useful for finding leaks in the radiator, coolant hoses, heater core, engine block or cylinder heads. You can also use this tool to check for a blown head gasket. It may be necessary to remove the spark plugs in order to perform this test.

Test kits come with a variety of adapters to fit radiators, radiator caps and coolant reservoirs. It is also possible to order adapters and pressure test pumps separately. Most test kits come with adapters for testing the radiator cap. You can find the lowest prices on cooling system test kits and other components at AutoZone.

How To Test the Cooling System
Test the cooling system while the engine is cool, and make sure that the vehicle is parked in a dry location where you can identify the location of any leaks. If fluid levels in the cooling system are low, carefully top off the reservoir with water for the test.

Squeeze the upper radiator hose to check pressure levels before removing the radiator cap. Exercise caution when removing the cap if the system is pressurized. Depending on the design of the radiator in your vehicle, a pressure tester may connect directly to the top of the radiator or coolant reservoir. If this is not possible, use an adapter.

Attach the spring-loaded pressure tester by pressing down and twisting the connector clockwise to lock. Pump the plunger to produce pressure. The needle on the tester gauge should rise with the pressure inside the system. As pressure increases, the engine, radiator or hoses may leak coolant.

Pump the plunger until the system indicates 14 pounds of pressure. Do not add more than 18 pounds of pressure to the cooling system. If it is impossible to maintain pressure levels, a coolant leak should be apparent.

Remove the pressure tester from the radiator or coolant reservoir by twisting the tool counterclockwise. Allow pressure to release before removing the tool, which may release coolant or water. Clean the tool and store the cooling system test kit in a cool, dry place.

Get Great Value at AutoZone
Search for cooling system test kits near me to pick up a kit at the closest AutoZone location. You can also have test kits, adapters and cooling system drain tools delivered to your door.

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