I have a 17 hp B & S on a yardman mower. It is only firing on one cylinder. I've got spark, gas, and compression, but it won't hit. I've changed coils and plugs. I've checked keyway on flywheel thinking it may have jumped time. When you pull the spark plug out, you can see it is wet with gas. The fuel solenoid has been removed. Is it possible that one cylinder is getting too much gas? When it is running, it will occasionally backfire. Any suggestions?
