IML: Re; distributor timing

["Pete Engel" <peter.engel@xxxxxxxxxxx>]

The timing should hold steady.  I'd check for sloppy distributor bushings
(despite the fact that it was a rebuilt part).  Also a worn out timing
chain/sprockets.

It's easy to check the vacuum advance if you have a MityVac hand pump.  A
distributor tester is really the perfect tool for this troubleshooting but
not a lot of shops have them anymore.  Heck, a lot of modern cars don't even
HAVE distributors.

Pete in PA


From: "Chris Strohmeyer" <chrisstroh@xxxxxxxxxxx>
Subject: IML: distributor timing
Date: Mon, 30 Apr 2007 12:14:35 -0700
Reply-To: mailing-list@xxxxxxxxxxxxxxxx
Hi all, I need a clarification on timing with a light on my 67 Imperial 440.
When at idle with the vacuum advance disconnected I get a steady strobe 
image on the 6 degree before mark. However, if I rev the motor to a steady 
say 1500 or there abouts the mark moves but doesn't hold rock steady..it 
jumps around a little bit about a half an inch.

 If I hook my advance back up and rev  to full advance it advances but 
doesn't hold steady. Should these readings be ROCK steady or close to rock 
steady?

As some of you probably know, I'm still have an erratic running engine that 
comes and goes as it pleases. The distributor I replaced from Kragen's  (I 
know I'm going hear it about that) because of this problem but it's still 
there.  A mechanic told me the "new" one could have a bad vacuum advance and

or sticking or improper tension advance springs.

What should I look for?

Thx,
Chris Strohmeyer
67 Imperial Convertible




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