[DMCForum] Re: Air system/mode switch question

["Walter Coe" <Whalt@xxxxxxx>]

Brian,

It is time you invested in a hand vacuum pump.  I have a
Mity-Vac brand (I think) with a built in vacuum gauge.  The
built in gauge is very useful.  I bought the whole kit from
NAPA that has all the weird little adaptors/fittings.  This
tool is indispensable.  I use it to prime-siphon fuel tanks
or vacuum out about any liquid from any hard-to-reach place,
test ignition vacuum advance, test CPR, trouble shoot a/c
controls, etc.

To test any vacuum actuator, just hook up the hand pump,
draw a vacuum and watch what happens.

Until or unless you get a pump, try pulling the hose loose
for the vacuum source of the mode switch and test for vacuum
there.  You should hear it sucking air, and it will
suck/stick to your finger tip.

Walt    Tampa, Florida

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