I changed the AC condenser in my 2005 Civic because the old one was leaking. The problem is I accidentally overfilled the compressor oil when I changed the compressor a year ago. The new one came with 7 ounces in it and the system takes a total of 5 ounces. The system did not cool as well but still worked. Now that I have the system open to change the condenser anyway, I wanted to fix the oil overfill. I had no way of knowing how much oil is left in the system, so I pulled the evaporator out and I plan on flushing it to remove any remaining oil. I also plan on flushing all the lines. Tomorrow I plan to pull the compressor and dump all the oil out of it and start over with the correct amount. My question is when I flush the evaporator, I probably will not be able to remove every single drop of flushing solvent with compressed air because of how complex all the tubes are. How are you expected to remove all the solvent? Or will it just boil out when I vacuum the system? Thanks for your help in advance.

 

just take the compressor off and dump out two ounces

 

I dunno what youre flushing it with. I was a japanese dealer tech and we used rubbing alcohol when flushing. When you draw a vacuum before refilling the AC system with r134, theoretically you will boil off the alcohol and the water.