Posted by rcbrownjr on 10/27/17 - 9:50 AM
#2
Have you checked to see whether you have a spark in each cylinder?
I had a similar problem in a 1986 Johnson 2 stroke. The engine appears to idle fine, but has no power when the throttle is advanced.
It is not uncommon for the ignition coils or power pack to go bad over time. The ignition coils can be tested visually with an inline spark plug tester and with the ohms setting on a multimeter. If the spark plugs and ignition coils are good, many times the power pack has failed. Fortunately, ignition coils (<$30) and power packs (<$75) are readily available online.