Reply To: 6 hp Johnson no fire

[David Stanton]

See if the spark will jump about 1/4 inch in free air. You can take an old spark plug and bend the gap open farther.

Does that cylinder have compression? If it’s really low You could have broken rings, or a blown head gasket and it will not fire. If you don’t have a compression gauge, slowly pull the starter rope and see if compression “feels” about the same in both cylinders.

Another problem could be a broken or bent reed.

Let us know what you find!
Dave