Bleeding after radiator replacement

[thormann]

Hi, I have replaced the right radiator of my 996 4S due to an accident. 

 

After disconnecting the coolant hoses from the broken radiator, I collected about 1 gallon of coolant.

 

Now I have installed the the new radiator, filled the coolant reservoir to max, opened the bleeding valve and started the engine. After a while the left radiator is getting warm, so the regulator valve seems to be open. However, the new (right) radiator remains cool. I can feel that the upper hose connected to the radiator is warm, but not the radiator itself and the lower hose. The coolant is still at max level...

 

Any idea what I am doing wrong?

 

Thanks a lot,

 

Thormann

 

 

Edited April 6, 2019 by thormann

[JFP in PA]

4 hours ago, thormann said:

Hi, I have replaced the right radiator of my 996 4S due to an accident. 

 

After disconnecting the coolant hoses from the broken radiator, I collected about 1 gallon of coolant.

 

Now I have installed the the new radiator, filled the coolant reservoir to max, opened the bleeding valve and started the engine. After a while the left radiator is getting warm, so the regulator valve seems to be open. However, the new (right) radiator remains cool. I can feel that the upper hose connected to the radiator is warm, but not the radiator itself and the lower hose. The coolant is still at max level...

 

Any idea what I am doing wrong?

 

Thanks a lot,

 

Thormann

 

 

 

It is air bound, you should have pulled a vacuum on the system to get the air out and then (still under vacuum) refilled the system.

[DBJoe996]

19 hours ago, JFP in PA said:

 

It is air bound, you should have pulled a vacuum on the system to get the air out and then (still under vacuum) refilled the system.

Agree.  If you are not able to do this get some professional help because air pockets in the cooling system can damage the engine.