Burping a cooling system

[Gilles]

Originally Posted by rexcramer

+1 for the vacuum method. I can't imagine doing it any other way. I nailed it the first time I used it.

Rexcramer, which vacuum pump did you buy? I am planning on installing the 'third center radiator' but don't have a vacuum pump, thanks!

[piper6909]

Originally Posted by Gilles

Rexcramer, which vacuum pump did you buy? I am planning on installing the 'third center radiator' but don't have a vacuum pump, thanks!

No need for a vacuum pump. Just do what Starter986 said and jack up the back.

Also follow the revving procedure in this article:
https://www.pelicanparts.com/techarticles/Boxster_Tech/29-WATER-Flush/29-WATER-Flush.htm

[Gilles]

Originally Posted by piper6909

No need for a vacuum pump. Just do what Starter986 said and jack up the back.

Thanks Piper,
I used this method on my 987 when installed the center radiator and again after replacing the water pump, but the 981 has also a heat exchanger on the PDK gearbox and I wanted to ensure that no air pockets are left on the system ...Perhaps is an excuse to get a new tool? :-)

[piper6909]

Originally Posted by Gilles

Thanks Piper,
I used this method on my 987 when installed the center radiator and again after replacing the water pump, but the 981 has also a heat exchanger on the PDK gearbox and I wanted to ensure that no air pockets are left on the system ...Perhaps is an excuse to get a new tool? :-)

I get that! I often look for excuses when I want a new gadget. In that case, get the pump and enjoy!

[rexcramer]

Uview Airlift Model #550000. The link is a YT video; https://www.youtube.com/watch?v=FQnfUe6P5VI It really is that fast and simple. I had two Boxsters at the time and figured the time savings was worth the cost. Still feel that way. This tool and a Motive power brake bleeder are essential tools, as far as I am concerned. Can't imagine doing either of those projects without both tools.

I don't see them on Pelican's site. Amazon has them listed for +/-$120.

Edit, a good air compressor is required to pull a sufficient vacuum.

[Qingdao]

I just run it around the block with a jug of coolant in the trunk. Cap slightly unscrewed, and wait for the burp. Took about 3 miles last time. *

That vac tool looks neat though.


* put all new hoses on when we first got the car... then my wife broke her radiator... then the overflow jug cracked. So I've done it three times. Well, that was the last car.