My spark plugs keep fouling on my 1976 35 hp Johnson. It starts and runs, but when I shut it off, I can't start it again unless I take out the plugs and clean them, they get covered with gas/oil fast. But, I can't start it unless I choke it first, even after I cleaned the plugs. The plugs are Champion QL77JC4, are those right? Is there something wrong with the carberator that it is getting to much gas, but without it, it won't start. Any help would be great thanks.
