Boat Repair Question

[JLW]

If there is only one plug that has a questionable color to it, you would think it would be what you have changed. There could be a piece of dirt in the carb. Yamaha makes some real good carb and cylinder sprays where you spray into all the carbs while it is running and then choke it out with the spray and let it sit awhile. When you start it up you wont believe the crud that comes out and everything is sparkeling. After that you are suppose to put new plugs in so if you have your old plugs you would probably want to put those in first. At least it is something that is inexpensive to try that might work. It helped my outboard.......Fishon
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