Hi
I have an 11hp briggs and stratton lawn mower engine and I did a lot of major reparations on it. But I noticed that the intake valve was longer than the exhaust one. A few 0.something milimeters... so I tried to file it and now it's too short... All these explanation to come around the biggest problem. When I pull the crank, there's smoke coming out of the carb... Could someone help me please?