Quote:
Originally Posted by marco5
Go to a A/C shop dude, they will have all of the tools to test, pressurize the system and such. If you're gonna do the work yourself, do this.
1) Vacuum the system for 30 min.
2) Charge it with a few A/C cans (make sure it has OIL and DYE, do not charge it with JUST freon) run the A/C until for a while.
3) Drive with it on and etc.
4) Then check for leaks after a few hours with UV glasses, determine where the leak is (probably the compressor)
5) vacuum the system once again and fix leak for an hour (most likely involves replacing compressor) also replace your drier, expansion valve (very important). This is where you do the conversion to r134a
6) vacuum again, see if it holds vacuum for an hour if it holds, charge A/C
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kuene:
Quote:
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"Go to a A/C shop dude, they will have all of the tools to test, pressurize the system and such."
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This is good advice.
The rest (below the above quote) is WRONG in so many ways. Please do NOT follow marco's advice. There is so much good A/C information on this forum, and most of it comes from seasoned professionals. First: NEVER use vacuum to check for leaks!!!!!! This has been said so many times, and so many ways. Second: It is illegal to vent refrigerant! If you know you have a leak, why would you WASTE refrigerant by using it to check for a leak??? Yes you can use compressed air for finding a leak in a system that will be opened up soon anyway. After that, you SHOULD flush the evaporator and condenser before replacing any parts. Please follow the advice of members like Leathermang, Vstech, etc. Also read their A/C threads, you will learn the proper way to service your system. Thanks, Rich