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Re: vent problem on 85 735i (archive)
[ Follow Ups ] [ 7-series (E23) Message Board ] [ Msg. Board FAQ ]
Posted by Javier on October 16, 2000 at 15:55:49:

In Reply to: vent problem on 85 735i posted by james.h on October 12, 2000 at 17:06:23:


i was wondering if the vaccum ball is bad because air only blows out defrost vents ??? help


even if your vacuum pump is inop, remove or bypass the check valve and see if your vents will energize with the vacuum from the manifold. Just follow the vacuum line from the water heater valve back to a tee which goes to the vaccum pump and the other line will go under the manifold with a check valve in line.

Let me know if it works.



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