Bill, If the micro switch on the throttle body lever is adjusted properly,
only then will the vacuum solenoid open/close because the micro switch has
un tripped and allows the vacuum allowed to go to the vacuum advance on
the
side of the ignition distributor. You should also have a idling problem if
this circuit isn't working properly, also.
Yes, If the switch isn't tripped or not working will vacuum be going to
the
ignition distributor when in the rest position and naturally if you time
it
there it will be off.
John Hervey
-----Original Message-----
From: content22207 [mailto:brobertson@xxxxxxxxxxxx]
Sent: Sunday, August 17, 2003 10:18 PM
To: DMCForum@xxxxxxxxxxxxxxx
Subject: [DMCForum] Another spark advance question
OK Martin:
Stock DeLo shoots full vacuum to spark advance as soon as throttle
plates open. If cut off solenoid is holding this, means car is timed
at full vacuum. What happens THEN as RPM's increase and vacuum drops?
Yes, I know there's centrifugal advance too, but seems to defeat
purpose of any advance at all. Centrifugal advance is moving rotor one
direction at same time vacuum advance is relaxing it the other.
If this is truly what JZD intended, seems an owner would actually be
better off disconnecting vacuum diaphragm altogether and simply
letting mechanical advance do it all.
Bill Robertson
#5939
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