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    1977 Johnson 85HP

    I have a 1977 Johnson 85hp. Compression 110 on all cyls. New battery, fully charged with 1000 cca. With the spark plugs out, good spark as indicated by spark tester. With plugs in, no spark on any cyls.No significant drop in cranking rpms either way. I was told by a mechanic, most probably the...
  2. S

    no spark with plugs in

    Hi-I have a 1977 johnson 85hp. With the spark plugs in, I get no fire at all. With the plugs out, I get good fire. RPM's are well over 300. Checked kill circuit and rectifyer-no change. Help. Thanks
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