Fouled spark plugs...weak coil?

[Picknasty]

I just changed the spark plugs on my 1996 OMC 7.4GL inboard. This is the first time the plugs (ACDelco MR43T) have been changed since I purchased the boat in January. When I pulled the plugs I inspected each closely and found that all were fouled with carbon deposits and one had a little oil film on it. After looking at a few burn charts I see that fouling is typical of a plug that hasn't reached the optimum burn temp of 450 degrees and/or a maladjusted carb. Would I be right to replace my ignition coil and seeing what that does before rebuilding/adjusting my carb?

Maybe I'm trying to do too much to fix this issue but I'm just trying to do the best preventative maintenance I can to make this engine last. Having said all this, fire away and let me know what you guys think. Thanks!

 

[Bondo]

Ayuh,.... Welcome Aboard,..... Changin' the coil ain't gonna fix the carb,....

 

[Picknasty]

So this is predominately a carb issue? Should I be looking to rebuild or adjust? If so what exactly am I looking at getting into? Thanks

 

[Bondo]

So this is predominately a carb issue?

Ayuh,.... Probably a 99% chance,....

Adjustin' might do it, but a full on rebuild, 'n set-up for sure oughta fix it,....

 

[Picknasty]

Sounds good, I'll look to rebuild it after the season then. Its running great now, just looking ahead and performing the right maintenance. Thanks again.