Hello all! It's sad to report ole evi is sick! I have a high speed miss that progresses into an all speed miss over time. I have replaced almost the entire ignition system. (Stator, power pack, coils, wires, and plugs) Boat will run great for about 5 hours then the miss returns. After taking a look at my plugs the #1 clynder is completly encrusted in what looks like carbon. (Completly encrusted!!!!!! No longer even a visible gap all coated) My guess is that I have a leak in the #1 cylinder and the salt is crystalizing and thus sticking to the plug and fouling it! What are any of your thoughts??? Time for a new head gasket? FYI- I have already done 2 carbon treatments!!<br /><br />Looking forward to any reply's,<br />Tim