I have a 2008, 18.5 Briggs engine. Yesterday, it started blowing oil out the right hand side of the motor (no oil filter on this model). After about two yard cuts, the oil drain plug came loose. I cleaned the motor, could not see where the oil was coming from. On the third yard today, it blew the oil drain plastic plug out again, started smoking and cut off. I let it cool, filled it up with oil and cranked it back up. Any ideas or suggestions on why it is leaking oil out the right hand side, and eventually blowing the plug out??
