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: Changed my headgasket and radiator on my 98 subaru legacy outback and my car starts overheating on long trips until heat is on 4

The most common causes of overheating include low coolant level, a faulty thermostat, a plugged radiator, a faulty radiator pressure cap, collapsed hoses, non functioning cooling fans, and a faulty water pump or drive belt. Certain engine faults, such as...

Q: Fast Ticking sound coming from the engine.

Hi there. To see where the noise is coming from on the engine, first try removing the drive belt and starting the engine. If the ticking noise went away, then there is an issue with a pulley on an accessory...

Q: What are the standard and optional restrictions available for the MyKey system?

The MyKey® system on your car is designed to allow restrictions on several different systems and functions when a programmed MyKey® is used in the ignition. This is an important consideration for drivers who are still learning the basics, and...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...