So I re did my entire A/C system yesterday on my 98 Honda Civic. I replaced everything but the hoses. So that included the Evaporator/Expansion Valve, the Condenser, the Dryer, and the Compressor. I got new seals on all those areas, put a little oil on them bad boys, tightened it all up, and then drew a vacuum on the thing. As soon as I turn the vacuum off, the pressure returned to atmospheric. So, I thought I had a leak. Does anyone have any suggestions? The system has oil but no R-134a obviously. I used a little Autozone rental vacuum and gauges to pull the vacuum. It was brand new, but the gauges were not. Please help! I really haven't a clue now how to find if I do in fact have a leak or not. And if so, how on earth to find it.

Thank you in advance! It's like 98 F today...