IML: 1961 Imperial restoration tour

["Rob van der Es" <r.vdes@xxxxxxxxxxxxxxx>]

Hi gang,

Maybe it has been posted before, if so I am sorry!
But I stumbled into this on the internet: 
http://www.classicresto.com/mambo/content/view/91/2/

Have fun,

Robert
1960 Imperial Crown 4dr HT


----- Original Message ----- 
From: "Joe Strickland" <jwstrick426@xxxxxxxxxx>
To: "Imperial Mail List" <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Friday, October 12, 2007 3:36 AM
Subject: IML: Electronic ignition


> I have been having trouble posting to the IML lately after resubscribing
> and changing to digest mode.  I wanted to share these comments I sent to
> Geoff in case it might help someone else.
>
> Geoff;
>
> Have you had your existing distributor apart enough  to see the
> mechanical spring loaded advance cams?  If not, remove the points and
> the points' mounting plate and check the movement of the spring loaded
> cams.  The cams should move easily by finger pressure and quickly return
> to their resting position.  The pivot points of the cams are lubricated
> and it is possible that the lubricant has dried out.  This can happen on
> both conventional older design distributors and the newer electronic
> distributors.  It shows up as knock or ping under acceleration. Check to
> be sure the vacuum advance and vacuum lines have no vacuum leaks  I had
> a '73 model with electronic ignition which would act that way.  I
> eventually discovered the problem with the cams when I started to
> replace the pick-up reluctor mechanism and star wheel on the distributor
> shaft.  Before replacing the parts I decided to clean and re-lubricate
> the cams and it corrected the ping/knock problem.  I went ahead and
> changed the reluctor element and the star wheel on the distributor shaft
> anyway since I already had the parts on hand.
>
> The car I mentioned above had the exact symptoms you described - pinging
> under moderate acceleration.  If you really got on it, the pinging would
> go away.  It pinged just when you did not want to put your foot into it,
> just normal driving.  It is a subtle condition and difficult to analyze
> except by just removing that upper plate and trying moving the
> counterweights/cams to see if they move freely and quickly, not slowly
> (caused by dried out or gummy lubricant).  I hope this helps.
>
> Joe


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