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Originally Posted by jinx10000
I changed my air conditioner over to R-134a last summer. I had a wreck so I had to buy a new condenser. I changed it out and refilled the system. It took several hours to fill, is that normal? Anyways it took it and worked all last summer but I could see a very small leak where it was bubbling up around the new condenser. I believe I fixed the leak but now I am trying to fill the system again. I waited several hours, and nothing is going in. It has two adjustment screws, one on the high side and one on the low side, at the end of the refill spot. I've turned them all the way in and all the way out. Anyways I'm connected to the bottom hose. Does anyone know if this might be the high side? Maybe it just got lucky and accepted it last year. I had the jeep on and the air on high. Someone help?
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LOw side hose is fatter....Hi side is thinner (High pressure is more powerful). Always charge to the low side only...the high pressure exceeding 225 psi can blow your can apart!
both screws should be out (service valves are only for compressor service). Get a book on AC. The compressor must be running to charge...the low side is the "suction" side and will draw in the refrigerent. Use a kit with a gage marked in 0-100 psi (low), do not connect to high side. Professionally they have two gage, one for low and one for high for more useful diagnostic information. Charge to 30-34 psi. Do not overcharge.
If your compressor doesn't come on. you have other problems.