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  #1  
Old 09-10-2009, 10:31 PM
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Does this mean anything?

I have noticed that when I look at the timing marks, with the timing light, they will move two or three degrees back towards zero. It is very noticeable when I have the engine up 1500 rpm. It is a quick jerky movement.
Is this an indication of anything?

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Old 09-11-2009, 08:28 AM
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Are the vacuum lines connected?
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Old 09-11-2009, 08:55 AM
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Originally Posted by twinockchef View Post
I have noticed that when I look at the timing marks, with the timing light, they will move two or three degrees back towards zero. It is very noticeable when I have the engine up 1500 rpm. It is a quick jerky movement.
Is this an indication of anything?
Normal ignition, Retard?
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Old 09-11-2009, 09:14 AM
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Hey! No name calling!

Perhaps you could have said," Possible normal vacuum timing retarding".
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Old 09-11-2009, 09:33 AM
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Id say vacuum
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Old 09-11-2009, 09:35 AM
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If it's just a few degrees I wouldn't let it concern me. It just means that some things are getting a little warn. Chances are the bushings in the distributor are are getting a little loose. Another possibility, though unlikely, is the spring on the points is getting weak causing them to bounce.
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Old 09-11-2009, 10:44 AM
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How smooth is the idle?
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Old 09-11-2009, 03:42 PM
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Originally Posted by cadurning View Post
If it's just a few degrees I wouldn't let it concern me. It just means that some things are getting a little warn. Chances are the bushings in the distributor are are getting a little loose. Another possibility, though unlikely, is the spring on the points is getting weak causing them to bounce.
x2. looseness I would think.
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Old 09-11-2009, 03:48 PM
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The idle is ok and the vacuum unit is new. Start up is a little rough.
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Old 09-11-2009, 04:00 PM
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Originally Posted by Mike D View Post
Hey! No name calling!

Perhaps you could have said," Possible normal vacuum timing retarding".
Cheers Mike, advanced english
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Old 09-11-2009, 04:04 PM
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Yeah, in that case I'm in the "forget you noticed it" camp too. I've seen them vary a little at random too. More often than not they do, although I've owned cars where they are rock solid steady too. They're almost always steady at high revs regardless, what's it like at 3000?

Were you the person on here that went through that whole frozen-sheared off distributor replacement fiasco?

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