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A/C vaccum loss - how much is major/minor? 200 1989

posted by  greg_mustang on  Tue Jun 17 09:13 CST 2003
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last visit: Sat May 10 07:26 CST 2014
[RELATED]

After retrofit to R134...

New compressor oil.
New expansion valve.
New dryer.
New o-rings at all replaced parts.

I just pulled a vacuum using my Mastercool 5CFM. It seems to pull only until 25 after 1 minute, as seem on manifold guage set.

After letting it sit for 10 minutes it is down to 20.

I repeated, same small loss of vacuum.

Is this considered major or minor? Should I try a stop-leak product?
Should I pull vacuum for longer and retest?

Thanks!
Greg Mustang
Montreal - Ottawa
Canada





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