No Spark

Dave,
To confirm, before you clean up the contacts, disconnect the negative wire to the coil, rotate the engine so they are closed and get an Ohm reading across the contacts.

Sandpaper and point files are great to see if you can get it running but once you do plan on replacing them. Modern point sets are plated and if being used are most likely pitted anyway

Hi Dave

Your voltage readings are saying that the points are open.

Don't know if the 12 volts negative to ground was with the engine rotating or sitting still.

If it was sitting still, it just means the points are open

If it was rotating and the points were opening and closing, you should see a repeating fluctuation from your 12 down to 0 and back to 12 as they open and close.

They may look good and have a little corrosion preventing them from closing "electrically"

Your dwell meter will tell you if they're electrically opening and closing

Running a little piece of sandpaper between the points may do wonders

Well just a day after I posted on another thread that my boats were running well, I have a problem. My '63 has no spark, Buick V6 Sabre, all original. I thought I had narrowed it to a bad coil, but took it off the boat and with a meter the primary and secondary coils ohm out as good. On the boat I have 12 v when I go from negative and positive sides of the coil to ground, but I'm getting no spark from coil high voltage side to ground nor at distributor or spark plugs.

This is the first time the boat has been run in quite a while, but it was put away in running order.

Thoughts?