1983 gl11oo. Hard to explain. Cuts out, misses at 3500 to 4500 rpm when leveled out. I can power throught it from a start. Starts and runs great except for this problem. If you stay on it, it will finaly get throught it and run great but right in that range it spits and
sputters. No matter what gear. Tryed differant carb set same thing. Swaped coil pak same thing. Changed pulse gen. same thing. When it does this can see black smoke from exhaust from cyl 1 and 2. Going crazy trying to fix this problem. Plugs 1 and 2 show a small carbon spot on Porcelain on the same place. Going crazy trying to fix this problem.
sputters. No matter what gear. Tryed differant carb set same thing. Swaped coil pak same thing. Changed pulse gen. same thing. When it does this can see black smoke from exhaust from cyl 1 and 2. Going crazy trying to fix this problem. Plugs 1 and 2 show a small carbon spot on Porcelain on the same place. Going crazy trying to fix this problem.