1991 Johnson 200hp. When I started it up today I had a tremendous amount of smoke and a unsmooth idle. When I increased the rpms it smoked even more. It was stuttering last weekend until I got above 1000rpms, then smoothed out. I checked the firing and it is steady on all cylinders. This is probably a carb problem?? If so, what would be wrong in the carbs to cause this?? The Idle jet and the Intermediate jet are air feed, not fuel. The main jet in the bottom of the bowl is the only fuel jet. Would float adjustment or something in the bowl cause this?? any advice appreciated.
