Posted by smallercrawler on October 07, 2011 at 07:24:24 from (166.82.254.181):
Hi all, I ran into a problem with an Continental F124 gas engine in a 1950 U.S. Trac dozer. As these engines were used in some IH/Farmall, thought someone might help. Engine has been running fine for last several years, started and worked for a couple hours each month. Started up good yesterday and ran ok for an hour or so. Began stalling/missing, thought it was what is called gasoline these days so checked fuel system-nothing apparent. Was running at 1500 RPM when it backfired 3 or 4 times, coughed, and stopped. Would crank, but not start with frequent "chuffing"/backfire. Found distributor rotor had broken on shaft. Cleaned plastic from distributor, installed new one and same thing. Changed to new plugs (gapped ok), 2 known good coils, and checked point gap, compression good, still same problem. It now looks like rotor is between 2 plugs and trying to fire both, rotor moves smoothly-doesn't appear cam gear damaged. Distributor body hasn't moved. What has apparently changed timing by about 45 degrees?? Sorry for long post, trying to anticipate questions. Thanks for any help offered.
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