Reply To: Evindure 56 CD smokes

[JOHN HOLBIK]

At our resort we put J8J in all the motors we rented for fishing that were used for extended tro;;ing.I always sped the motor up to clear excess gas every half hour or so.
I do not trust any spark plug manuals from about 1975 up.I have found many inaccurate plug recomendations plus the plugs used to have many different plug numbers to cover specific engines now they spec one plug to cover all engines in a group.
I always thought all the pre thermo engines ran J6J that is what my old operators manuals state but new plug manuals say J4J which are far to cold for low speed use.