I have a Merc 9.8 that is running pretty poorly. The engine will fire up but it seems to be misfiring on one cylinder sporadically. When I pull the plugs one is significantly more fuel covered than the other. The running speed also seemed to be much higher on the second time I ran the engine. I had the carb and fuel pump assembly apart and it seems to be in order. The only thing that I can think of is the CDI box as I know that these are a common failure point.
Does anyone think this sounds like a problem with the CDI box? what are the symptoms of a CDI box going bad?
I am also wondering if these boxes are fairly interchangeable from year to year and from 7.5 to 9.8 engines. I do have a couple spares but one is on a 7.5 and I have no idea if they are any good either.
Any help is appreciated.
Thanks
Does anyone think this sounds like a problem with the CDI box? what are the symptoms of a CDI box going bad?
I am also wondering if these boxes are fairly interchangeable from year to year and from 7.5 to 9.8 engines. I do have a couple spares but one is on a 7.5 and I have no idea if they are any good either.
Any help is appreciated.
Thanks