Replaced the compressor with a good used last year.
It locked up, so just replaced with another tested good used.
When I pulled vacuum, it did not get close to pegging as it did last year, a coupl of lines above the 30.
Left work today, no cold air, got home, and added some 134 using gauges.
An hour later, no A/C.
Pressures read 0/0
Massive leak, obviously.
Question is, when the compressor is replaced, should the O-rings be replaced as well ?
I did not replace them last time or this time, and that is my suspision.
Close to correct, or completely wrong ?