240efi random spark on #2 cylinder

[useitorlooseit]

i checked all my coils and they all check out to be good # 2 cylinder wont fire my boat only goes 50-52 . i changed plugs and it still dosnt fire#2 i pulled harness and continuity tested each of the wires and they are all ok i have moved coils around and none will fire on # 2 i think it has before im not sure. the ignition modual is new i tryed switching to my od one which i replaced and still no spark. the 4 wire colors are green white ,white black ,black yellow and black on the driver side of my boat there is a green white and a brown wire not pluged in they are male plugs just hanging? the boat is a 2000 speedster any ideas the green and white wire runs to a connector with a white green that go under the fly wheel??

 

[Dr Honda]

Sorry no one got you you yet on this....


OK... I've spent the morning looking over the manual, and wiring diagrams... and if you only have a miss-fire on the #2 coil... and it's known to be good... and the physical wiring is good... and it has a good ground... then all that leaves is the "Control Module."


Basically.....

1) if there was a bad diode in a coil pack... there wouldn't be fire on 1, 2, or 3.

2) If it was a back pick-up coil (or bad pick-up wiring)... you would also have a miss fire on #4.

 

[bhatch21]

Have you tried replacing the spark plug wire or cap on that cylinder?

 

[useitorlooseit]

so i checked it over again it was a wire the white and black wire which i think is the signal wire for the coil has a 3 way joint and thats where is was not working boat is way faster now! big difference!!

 

[Dr Honda]

Thanks for the update, and I'm glad it was a cheap fix.