Q: I have air pockets in my cooling system how do I get them out

asked by on

The other day I drain my antifreeze change the thermostat and now I have air in my cooling system lines what is the best way to get the air bubbles out I have tried everything and still is not working
My car has an automatic transmission.

The cooling system does not need any special procedures to get the air out of the system except to have the heater to on and warm setting. This will allow the coolant to flow through the heater core and out to purge all the air out. You should start by filling the system and then start and let it run at idle until the thermostat opens. Once the thermostat opens then coolant level will go down and need topping off. Once the system is topped up then install cap and accelerate the engine up to 2000 rpm for 30 seconds and let it idle. Do this a few times then let idle and shut off engine to let engine cool and then top off coolant. The system may need to be checked each morning to bring the level to the cold fill line before starting. This should get all the air out of the system.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I have air pockets in my cooling system how do I get them out

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Can a gasket leak from the intake leak air into the cooling system?

Hi there. An intake gasket leak would allow unmeasured air into the intake and create a lean condition, not an overheating issue. Base on what you've described, it sounds like you may have a leaking cylinder head gasket. Adding sealants...

Q: Q: What does the Door Ajar Light mean?

The Door Ajar Light is a helpful indicator that will let you know when the doors of your vehicle are open. For safety reasons, you should never drive with a door open. To understand the Door Ajar Light. The...

Q: Radiator or hose leak is leaking, the air filter box is not screwed on right, and there may be a wiring problem.

Hi there. For the radiator, the rubber hose may be cracked or loose. Check the hose for any cracks and if the clamp is tight and it leaks, then the clamp may be worn. Replace the clamp for a better...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.