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How To Purge Air From Coolant System

A coolant system is one of the most important parts of your car, and it’s essential that it stays clean in order to run smoothly. If your system doesn’t stay clean, it can cause problems with your engine, including decreased fuel efficiency and even more serious issues. In this blog post, we’ll show you how to purge air from your coolant system and keep your car running smoothly. By following these simple steps, you can avoid all sorts of trouble and keep your car running like new.

What is Coolant System Purge?

The coolant system purge is a procedure that’s used to clear the air from the cooling system. This is necessary to prevent overheating and possible engine damage. The purge can be initiated manually by turning the key to the “on” position and waiting 10 minutes, or it can be done automatically by the vehicle’s computer. The purpose of the purge is to remove any contaminants that may be in the air mixture, including pollen, dust, and fumes.

The Different Types of Coolant Purges

There are a few different ways to purge air from a coolant system. One way is to use an air purger. Another way is to use a water pump and blower.

How to Purge a Coolant System

If you notice your car is struggling to start in the morning, or it’s giving off a strong smell of gas, there’s a good chance your coolant system is contaminated. A contaminated system can lead to a number of problems, including decreased fuel economy and an inability to start the engine. The best way to purge a contaminated system is with an online auto repair guide from RepairClinic.com. Here’s how:

1) Park your car in a place where it won’t be affected by weather or other activities that could disturb the fluid levels or cause leakage.

2) Turn off all electrical components within 10 feet of the vehicle. This includes everything from the headlights to the radio.

3) Open each of the radiator caps and let the hot coolant pour out onto driveway or ground below. Do not allow any water into the car!

4) Close each radiator cap slowly and evenly while monitoring pressure gauges on each side of car (between 5-15 psi should be maintained). Do not overfill – adding more than 3/4 full will cause unnecessary strain on seals and parts inside car).

5) Let the fluid level in each radiator drop below 1/2″ before refilling using fresh coolant (the pink color should disappear when coolant reaches proper temperature). Use caution when opening caps as high heat may result in boiling mixture spilling ontohood or windshield.

Pros and Cons of a Coolant System Purge

A coolant system purge is a procedure that can be used to remove air and other contaminants from a car’s cooling system. A coolant system purge can be helpful in cases of low oil levels, water pump failure, or air in the cooling system. However, purges can also be dangerous if not done correctly.

The benefits of a coolant system purge include:
-Removal of contaminants from the cooling system
-Helps to restore oil levels in the engine
-Can help to fix water pump failures

The risks associated with a coolant system purge include:
-Risks associated with using pressurized fluid (such as leaks)
-Risks associated with working inside a car (such as electrocution)

What to Do After a Coolant System Purge

If your car’s coolant system has purge air problems, follow these steps:

1. Drive the car until it overheats. The more heat the engine produces, the faster the purge air will dissipate.

2. Shut off the engine and remove the key from the ignition. Open all of the car’s windows and let the hot air out.

3. Use a vacuum cleaner to suck up as much of the purge air as possible. If there is still some purge air left in the system, you can use a can of compressed air to clean it up.

4. Reinstall the key in the ignition and start up the engine. Let it run for a few minutes to ensure that all of the purge air has been eliminated from the system.


It’s time for your car’s coolant system to be serviced, but before you head out and make an appointment, it might be a good idea to purge the air from the system first. By doing this, you can avoid any potential problems that could arise while the repair is being made. Purge the air from your car’s coolant system by following these simple steps: 1) Remove the cap on the radiator reservoir of your car and fill it with fluid until it is two-thirds full. Replace the cap once filled. 2) Open all windows in your car and turn on all A/C units. 3) Drive your car slowly around a corner so that centrifugal force forces gas bubbles out of the cooling system and into open areas like windows.