How to Check for Cooling System Leaks in a Chevy Cobalt

Keeping the cooling system of the Chevy Cobalt free from any possible damage is a must for the car to operate correctly. That's why you should monitor the coolant level and check the system for any leaks. Checking for leaks requires no mechanical skills, just the knowledge to know where and what to look for.

Instructions

1

Move the Chevy Cobalt from its traditional parking space and check the ground for any coolant. This is the easiest way to check for leaks, because the bright-colored liquid, which is most often orange or green, will be very noticeable on the ground.

2

Check all the belts and hoses that connect the radiator, water pump and heater core to the engine. These belts and hoses are especially susceptible to wear and tear, which can cause the cooling system to leak. Be sure to replace any worn hoses or belts even if they don't show signs of leakage, because they will most likely leak in the near future.

3

Inspect the water pump and the shaft seal for any signs of leakage. If there's leakage, you'll notice discoloration and possibly corrosion around the area. Replacing the water pump is the recommended course of action, if there is any leakage.

4

Use a flashlight to examine the radiator thoroughly by checking underneath the Chevy Cobalt and any other visible areas. The radiator is very susceptible to leaks as the radiator's plastic tank and aluminum casing can crack and split.

5

Test the pressure of the radiator by adding new coolant. Then, take the car for a 15-minute drive with the heater on high. Next, park the car and allow it to cool off.

6

Check the coolant level to see if it went down. If so, recheck all the previously mentioned parts. If there isn't any visible leak, the Chevy Cobalt may have an internal leak. Fixing an internal leak is best left to a professional mechanic.