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One-way valve for vent switches - spring loaded or not? 200 1990

posted by  ZJZ on  Sat Feb 2 13:21 CST 2008
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last visit: Mon Oct 13 14:29 CST 2014
[RELATED]

Trying to track down a small vacuum leak on the climate control system in my 245. The valve that is near the intake manifold seems to open and close properly, but I have to wonder - is it supposed to be spring loaded or snap shut automatically, or it is only closed by a pressure differential? I replaced the line between the valve and the vacuum tank to no effect, and the line on the other end of the vacuum tank to the switches is solid... so does anyone know about the one-way valve?

Thanks -
Zach
Anchorage, Alaska
1990 245 w/258xxx mi






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