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Couple months ago, our fridge ceased cooling. Called a repair dude, he came in says it's either leaking or plugged, he installed a piercing valve on the low side and topped it off and overcharged for good measure. That lasted 3 weeks. I assume I have a leak. I bought a can of 134a and an adapter hose on Amazon. I attempted to recharge it to 3-5psi, which I did, but got very little cooling out of the freezer and it went warm again. I borrowed a gauge set and decided to check and see where it sits right now, and was going to pressurize and see how fast it leaked out. I hooked it up with it not running, and it sits at 10in vac. If it was leaking, shouldn't it at least show 0psig? It hasn't been ran in a week. I assume the entire system would equalize in pressure and I should at the very least read 0 or slightly positive. I didn't fire it up yet, I was curious as to how I could have a leaky fridge stuck in a vacuum. The piercing valve is not on the high or low lines, but on the extra nub of line on the compressor. Is the charge (~6 oz) so small that it will not give an accurate static reading? Is there blockage in the filter drier or capillary tube? Could it leak out, but not in? ie self sealing when there's no pressure in lines It's a 5 year old (just out of warranty of course) Kenmore Elite 79571053012