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'90 740gle 16 valve ac 700 1990

posted by  joeS on  Sun May 11 04:35 CST 2003
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last visit: Sat Dec 22 14:25 CST 2012
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I have a '90 740gle 16valve with 135k on it . The a/c has a definite leak which it only holds a charge for 1 wk. The leak is not obvious. I have tried soap bubbles with no luck. The low pressure hose is oily. At 13 years old I was considering replacing the hoses and the compressor.( The compressor is noisy). I have guages and an air compressor to use a reed type vaccuum pump. I cant seem to find the high pressure port to evacuate the system. Does anyone know where it is? Should I replace all of it? It was converted to 134a about 5 years ago. Thanks for any and all help.






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