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Tom Endy · 10-22-2022, 07:42 PM

The rubbing block on the points wear down as you drive the car. This causes the points to close up. The ignition timing is set after the point gap is set. Usually set at a nominal .020. As the points close up it changes the timing. They tend to close up faster on a new set of points. On a new set they can close up considerably in just 100 miles. After that the wear is not as severe. You will notice them closing up while driving as you will have to keep retarding the spark by pushing the spark handle up. Resetting the points to .020 restores the timing.

Tom Endy

10-22-2022, 07:42 PM	#3
Tom Endy Senior Member Join Date: May 2010 Location: Southern California Posts: 3,168	Re: Points maintenance The rubbing block on the points wear down as you drive the car. This causes the points to close up. The ignition timing is set after the point gap is set. Usually set at a nominal .020. As the points close up it changes the timing. They tend to close up faster on a new set of points. On a new set they can close up considerably in just 100 miles. After that the wear is not as severe. You will notice them closing up while driving as you will have to keep retarding the spark by pushing the spark handle up. Resetting the points to .020 restores the timing. Tom Endy