I completely flushed the system, clean as a whistle.. Flushed the compressor with oil. Replaced all of the o-rings, and used nylog.. Replaced the receiver/drier..Added 8 ounces of synthetic oil. Vacuumed the system for 45 minutes or so.., and finally re-charged with 4 cans of virgin r-12.. According to the label under the hood system capacity is 2.9 lbs..
Vent temps are still not cold..
Ambient temp 82*
vent temps-- about 60*
Engine rpm 1500
High side 225 or so
low side 33
Electric fan works fine
Compressor does not cycle off.. Runs all of the time..
The return line is cool, but certainly not particularly cold.. What in the world could I be overlooking????