Adding freon to BMW 323ci AC system?

today I added one big bottle of freon to the AC low side port of my BMW. However when I check the pressure with electoric gaege it say the freon level is low add more. Does anyone know how much freon usually it take for the system to get full.

Adding freon to BMW 323ci AC system?pop up blocker

Chances are that you have a leak somewhere.

First of all, make certain that you are using the correct type of Freon. Using the wrong type of refrigerant can be costly, and the quality of refrigerant makes a difference. Secondly, make certain that the type of lubricant for the system matches the type of lubricant that you're putting into your AC system.

When you put the charge into the system, did you follow the directions carefully? Did you run the AC system when you were supposed to?

The best advice I can give you about AC systems is that it pays to take it to a mechanic who has the right recovery equipment to service your AC system, as the cost of R-134 is VERY high, and the consequences of putting the wrong types of refrigerant and lubricant are even costlier.

Firstly, you need to evacuate the entire system and put a vacuum on the entire system to drain out any condensation and pressure test it to make certain that there are no leaking O-rings and seals. Then replace whatever parts need replacement in the system, apply vacuum again to drain out whatever condensation entered the system during repair, then inject PAG oil (lubricant) into the system, and then the correct amount of refrigerant. As the AC system measures the refrigerant in Ounces or Kg, you really can't eyeball the amount when adding this, it needs to be weighed by a machine that costs several thousand dollars (thus, the reason that mechanics charge a premium for the service, and not every garage will do this.).

Pay a mechanic to service your car. If you can afford a BMW, then you can't afford to not have it professionally serviced.