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Old 05-22-2004, 11:54 AM
Ken300D Ken300D is offline
Registered Diesel Burner
 
Join Date: Aug 2001
Location: Northern Virginia
Posts: 2,911
The most typical reason is that your Freon charge is low again. You have a leak. Most likely place where a leak will develop is the valves where the system charging equipment attaches.

If the EPA were really concerned about Freon loss they would mandate a better valve design. Something with a more positive shutoff and something that would not deteriorate with age.

Ken300D
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1987 300D at 370K miles
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