"I just bought a '58 fastw
"I just bought a '58 fastwin 18. Got new gas for it mixed @ 24-1, changed plugs, gear oil in bottom end. When I started the engine up it would only rev up so high until I leaned out the high idle knob. Rpm's came up but the engine started to smoke some. The low idle side is pretty good. Idles low and smooth with hardly no smoke. Do these old outboards smoke some when running wot? Do you think it could use a shot of some seafoam to clean out the carbon? Could excess carbon be causing the smoking?"
"I just bought a '58 fastwin 18. Got new gas for it mixed @ 24-1, changed plugs, gear oil in bottom end. When I started the engine up it would only rev up so high until I leaned out the high idle knob. Rpm's came up but the engine started to smoke some. The low idle side is pretty good. Idles low and smooth with hardly no smoke. Do these old outboards smoke some when running wot? Do you think it could use a shot of some seafoam to clean out the carbon? Could excess carbon be causing the smoking?"

