Re: 1949 Farmall Cub - won't stay running

Posted by RN on October 09, 2006 at 11:23:19 from (69.130.249.49):

In Reply to: 1949 Farmall Cub - won't stay running posted by dave in york haven pa on October 09, 2006 at 05:10:06:

Go to library and read basic operator manual or find a Haynes or Chilton manual with pictures- back to basics on plug gap, points setting, wires, cap and rotor. Plugs may be wide gap- .025 to .030 is good gap to start for older ignitions, check manual. Many plugs now come from factory gapped for high energy/lean burn engines at .045/.055 inch or greater gap, hard starting old engines. Point gap needs to be about .015 to start, IHC was .013 for magneto, .018 for distributor, a too small gap here is a hard starter also, try a .020 wire between points with points rubbing contact on high part of cam, tighten base and turn over by crank and watch if points spark just before each high point- shaft bearing may have a bit of slop or a cam lob may be a bit worn. Since you said it was running before you worked on the ignition, suspect what you worked on first. Again- learn basics first. You seem to indicate you are not familiar with old Kettering ignition system. RN

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