I found a bad A/C line where my ARC intake rubbed the crap out of the insulation and metal line itself. I put a electronic leak detector to it did not sense anything but I want to replace that line while I have access to the equipment and gauges at school.. Im honostly not to concerned about the micron gauge. As long as I use the correct amount of R-134a and PAG oil that the SM specifies I will be satisfied.

 

Cool but please do yourself a favor put a vacuum on that system atleast, you dont wanna leave moisture in the lines, if you do kiss your compressor goodbye.
You dont need a micron gauge... Just a vacuum and dont have those guys just purge the air out with some refigerant.
Good luck bro

Marcus

 

Fuuny u say that actually same thing happened to me the intercooler piping rubbed on my ac lines and created a leak.
So i used alumaweld and welded the leak closed.

 

Weight is the only way to go bro.

high pressure can go from 185 to 300+, depending out outside conditions.

15 min vac is all you need to pull moisture on a system of this size. Keep it connected for 10 min or so afterwards to be sure the vac holds.

You really should have all the equipment. The compressor oil should be drawn in with the same vac that has held for 10 minutes. In other words: don't vac, then pull the gauges, they add oil by pressure. You'll only bring in outside moisture.