Where is the high pressure connection for the air conditioner
hi! there,
usually located on high side or discharge presure of the compresor, the discharge service valve fitting equiped w/ cup and pin auto valve ,loosen and remove service cap of service valve fitting,.as you remove the service cap no leak should take place due to it has a pin to locked the pressure on the sysrem . the guage manifold has a host and service port at the end of the host,the sevice port has a tip ball inside port when you connect your pressure guage manifold to test the discharge pressure the tip ball of port will push the pin valve service fitting and opening occued on discharge service valve and the pressure gauge activated and you can the operating discharge pressure.
in your case opening of cap then leakage appear maybe the pin valve was mis aligned or distorted,the service valve was repairable it can repair,but you have to evacuate all freon inside the
system.freon leakage is bad for our environment
use evacuating pump and service tank,after the freon evacuated repair service valve there is pin remover to pull out pin valve sometime cup has pin remover or ask on car air service center.the pin valve has screw type spring attachment replace pin valve and recharge the system you can use the previuos freon on service tank evacuated.
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