which is the correct line to install the freon and how much do i use
how do i install freon? on 1990 Volkswagen Passat
Google "air conditioning recharging" there are several Youtube videos to watch which are quite good, but if the system has a leak the leak needs to be repaired or the refrigerant will soon leak out again.
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BLUE IS COLD LOW PRESSURE THATS THE SIDE...NEVER TOUCH THE RED HIGH PRESSURE SIDE, IF YOU DO NOT KNOW WHAT YOU'RE DOING YOU COULD SUFFER INJURY OR DEATH THIS IS A DEADLY GAS EXCHANGE AND YOU NEED THE PROPER TEST FITTINGS TO DETERMINE THE CHARGE PRESSURE BE FORE YOU RECHARGE AND RISK BLOWING EVERY THING UP...RECHARGING KITS HAVE A GAGE AND FITTINGS AND IF YOU CAN READ YOU CAN TEST THE COLD LINE FOR IDLE PRESSURE, THEN ADD NEW GAS! BE CAREFUL...GOOD LUCK!