[rnln]

I tried that on both gauges but the adjust ment is so much of a little, can't go back to 0. I set it at 70 and that is "my 0" to work on. On the high side, I have 100 as "my 0". Now I am having a different problem when charging and I don't know if it the gauge set problem, or the car's problem.

After vaccumned everything for an hour or so. We started to charge, low side only. At first several seconds, the low side increased around 30-40 PSI, then it jump quick to the high side in a blink of an eye. High pressure gauge increased and low pressure gauge decreased.

We then stopped charging and starting to run the AC to monitor how it acts. In couple minutes reving rpm at 2k, low side is showing 10 psi while high side keep increasing slowly up to 300+ PSI. Remember we were not charging, just running car and turning AC.

Then we released some pressure from the high side and start the car, turned on AC again. Now he high side is lowering down to around 200 PSI, low side was still showing 10 PSI.

Then we charged it a little more from the low side. The strange thing is that whatever I put in there, it go directly to the high side; which means the low side always ended up at 10 PSI and high side increased up to 300+ PSI.

Here is how it acted in detail:
I opened low valve for a second or two. While low valve was opened, low side increased to around 35 PSI. High side stayed.
After low side valve closed, low side back to 10 PSI, and high side increased. I stopped and called it the day when high side increased up to 300+ PSI.

Driving the car in the evening, I get around low 50 degrees. The max I ever got on this car before was below 35 degrees.

Question, does low side suppose to go and stay up at around 20-30 PSI? The first thing we could explain this is bad gauges set???