While cleaning out the engine bay and admiring my newly installed P/S over the long weekend, I fired up the 144, and noticed that there seem to be a rattling noise coming out of the distributor, more noticeably on idle, but disappears on hinger rpms. Once the engine was warm, the sound vanished. It did the same thing few mornings ago, when the engine was cold. I had the distributor replaced with an electronic one from a 75 244 last year. I used to have the same problem on the old distributor, but did not bother to check on it as it never gave problems. Besides, the noise would sometimes go away whenever the cap is replaced.

Anyone encounter this before? The caps, rotor, plugs and wires are new.
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...and the bricks keep on rolling