Diagnosing A Radiator Leak

The engine powering your vehicle can generate a lot of heat. This heat needs to be dispersed to prevent the engine from overheating. Fortunately, modern vehicles are equipped with a cooling system that helps regulate engine temperatures.

The radiator is the heart of the cooling system. Leaks in the radiator can compromise the quality and performance of your vehicle. A leaking radiator can also contribute to serious engine damage that can be costly to repair. 

Visually Inspect the Radiator

If you suspect that your radiator has sprung a leak, you should begin diagnosing the problem by conducting a visual inspection of the radiator itself. Leaks can easily be spotted by looking for pools of coolant underneath the radiator.

Be sure that you examine the radiator from all angles. You shouldn't be able to see any moisture on the exterior of the radiator. If there are wet spots present, these are likely the locations of a coolant leak.

Conduct a Pressure Test

Another method that you can use to determine if your radiator is leaking is a pressure test. These tests require that you pressurize your coolant system. A lot of leaks are so small that they only manifest themselves when your vehicle is running. As the coolant heats and expands, it escapes through small holes and cracks in the form of steam.

A pressure test simulates the conditions created when a vehicle is running. You might want to have your mechanic complete this test. Too much pressure inside the coolant system can cause serious damage, so the pressure test must be used carefully.

Monitor Engine Temperature

Your vehicle is equipped with a temperature gauge that displays the engine temperature on the dashboard. You need to keep a close eye on this gauge if you suspect that your radiator is leaking.

Engine temperature will climb quickly if coolant is escaping from the radiator. As soon as you see the temperature gauge climb, turn your vehicle off and let it cool. Open the radiator cap to check the level of coolant inside. Fill the radiator up to the fill line, then drive your vehicle once more.

Monitor your dashboard closely to see if the temperature gauge climbs again. As soon as you spot an increase in temperature, let the car cool and check the coolant levels. If the coolant levels have dropped, you probably have a radiator leak that will need to be repaired by a  radiator repair tech.

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