Posted by John T on November 26, 2018 at 05:55:39 from (174.255.146.70):
In Reply to: NAA no spark posted by GenXer on November 25, 2018 at 18:44:35:
If a test lamp on the coils output (to distributors points) never flashes off with ignition on and engine cranked slowly, that means that point closure is NOT providing a good low resistance ground path...…….. Causes may be points are not fully tightly closing or burned or corroded or oxide coated (try to clean or replace) or the wirers open from coil to points. If only oxide coated a light not overly abrasive clean/buff/polish might cure the problem. Sometime passing a dollar bill through them might work or use of a points file (don't use sandpaper) if lightly burned or pitted, but if bad they need replaced. For more detailed info look at my Ignition Troubleshooting Procedure.
NOTE even with new points they sometimes have a protective coating that needs cleaned off TRY THAT. Also insure they are gapped correctly and close fully when off high cam and insure good wiring continuity from coil to distributor to points terminal...….
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