Apache1,
I know that you said this one is in the books but I would like to share some real life experiences concerning “new” spark plugs. Back in the early 80’s my local FLAPS dealer recommended that I try some “new” marine spark plugs for my outboard motor on my Orlando Clipper (he was probably out of the one’s I needed). I believe they were “surface gap” plugs. I know that Champion makes them now, but I can’t remember for sure what these were. Long story short, they left me stranded far from the dock (no Boat US or cells back then) on two different occasions. I could not figure it out on the first break down so I took it to my local Marine shop and they assured me that everything was in good shape. Well, the second breakdown was much further from the dock (a real adventure story) so I took it back to the shop. They found the problem by running the motor in a tank for about an hour and then finally traced the problem to the spark plugs. The plugs worked fine when the engine was cold and they did not show any problems until about 45 minutes in the tank (it would not crank back up after shut down). Those “new” plugs made for some interesting experiences (adventures) on the water.
SLC
