[Mr V]

Originally Posted by falconmaster

will this release all the air in the system? http://www.chiefdelphi.com/forums/at...0&d=1389572570

I think it does, I will double check in the morning.....

I'm not seeing a valve to depressurize the system in that diagram.

However if you put the drain valve anywhere between the compressor and the solenoids it will drain the entire system as long as you don't add a check valve in there somewhere.