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Old 11-02-2001, 08:23 AM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
You need a new actuator, Vacuum locks the system BUT pressure unlocks it. Pressure will push open a hole in the rubber diaphram(actuator). Vacuum will try to pull the rubber back together where the split is in the rubber. That is why you hear the leak on un-unlock & not lock.
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