[FC] vacuum advance question

[James Davis]

Easily checked.  With the cap off the distributor, try to turn the 
rotor clockwise.  If it turns about 10 degrees good; if not bad.  Now 
try to turn it counterclockwise.  If it turns more than teensy bit - 
that's bad.  Actually you should not be able to turn it 
counterclockwise, at all, but slop in the old gears and thrust washer 
as well as weak springs may allow a little movement.
Jim Davis


At 10:53 AM 12/10/2006, aircooled6 at prodigy.net wrote:
>I had that symptom on a "rebuilt" distributor.  As Bob Helt has
>already mentioned--the advance weights under the points plate are in
>backwards which causes them to do the opposite of what they are
>supposed to do.   If you have another distributor, youll be able to
>see the difference when you open them up.  Move the weights to the
>opposite sides, reinstall the springs and it should work properly.
>
>Everett Wilson
>North Richland Hills TX
>
>
>On Dec 10, 2006, at 2:11 AM, Wild8bill at aol.com wrote:
>
>>After setting the timing using a timing light, I noticed that when
>>I rev  the
>>engine that the timing retards very far very fast (from 14 btdc to
>>-4 btdc),
>>and kind of "catches up" to where it should be over a few seconds. The
>>vacuum advance appears to move instantaneously, however. If you
>>give it too much
>>gas too fast, it dies. Is this a symptom of a bad vacuum advance,
>>or bad
>>vacuum?  Yes, I did check for vac leaks.
>>
>>Note: thanks to everyone for the ideas about the electric fuel
>>pump, new
>>pump is on and fixed the problem.
>>
>>Bill
>>'61 rampside
>>'63 greenbrier
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