1960 evinrude big twin 40 spark issue.

nahoo7

Seaman Apprentice
Joined
Sep 13, 2012
Messages
43
hi I have replaced the coils and spark plug leads and boots new plugs and tested for spark.I good good strong spark on bottom plug but nothing on top one.I swapped condensers over and no change so both condensers are good.tested with ohm meter on 200k positive in boot negative to negative lead on coil reading of 4.7 on both dont know if that is right but if both read the same I guess the leads are properly seated in the coils points gapped and cleaned with acetone and look good any ideas or should I pull everything apart and try again thanks in advance.
 

kodibass

Master Chief Petty Officer
Joined
Apr 10, 2010
Messages
864
Re: 1960 evinrude big twin 40 spark issue.

shift coil from known good spark cylinder to top bad spark or visa versa and see if problem follows then you with good reason of proof point to the likle bad coil, spark plug wir etc.
 

nahoo7

Seaman Apprentice
Joined
Sep 13, 2012
Messages
43
Re: 1960 evinrude big twin 40 spark issue.

will try that thanks kodibass even new parts could be bad.
 
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