Reply To: Johnson 1949 HD 25 No Spark

[TiIngot]

Three very quick replies.  Thanks to all.  Based on all the input so far, I am focusing on the points ……again.  (I hate those little screws and washers with a passion!  They bounce really far when hitting the floor.  Finally put a catch box under the outboard stand.)

To completely isolate the points, both sets are removed and back on the bench.  A piece of thin cardboard is inserted between the points on each.  On both set of points, with the cardboard inserted, I have no continuity between the aluminum ground and the brass.

However, removing the cardboard on both sets which closes the points, I have continuity between ground and the brass on one and not the other.  I heavily cleaned both sets of points with my points file again and now both sets of points have continuity when closed and no continuity when opened.  (I previously tried to clean the points without removing them.)

If this works after assembly, I am expecting one cylinder to spark and not the other.   I will use my electric drill to spin the flywheel also.  To be continued

Thank you again.

Retired titanium melt shop manager. (Think about me next time you fly in a window seat and look at the engines spinning below the wings!)