I am helping a neighbor with a 12.5 hp Briggs vertical engine 289707 1179E-3 020503ZD. It is a single cylinder L Head design. It does not have a Nikki carb.
The engine had no oil to speak of when I first checked it. The oil sump was full of gas. I drained it out and refilled it with oil. I dropped the bowl off of the carb and cleaned the needle & seat and the float, I installed some new fuel line and a shut off valve. I had to jump it to get it started. Once it started it smoked like mad. I hoped it would stop smoking thinking the muffler had old gas and oil in it I had noticed that the air filter was saturated with oil when I had it off to clean the carb and I blew it out with my aidcompressot. The engine started to run rough so I shut it down. Checked the spark plug and cleaned it put it back in and it would not start. Remembering how the air filter looked I removed it and started and ran it with filter off. Started right up but after a few minutes it was blowing oil mist and oil out of the hose from the breather to the bottom of the air filter box. It was getting worse the longer it ran with no filter in it to catch the oil.. it started to look like Mt St Helen’s bad head gasket? Oil breather? Engine ran strong
Help?
The engine had no oil to speak of when I first checked it. The oil sump was full of gas. I drained it out and refilled it with oil. I dropped the bowl off of the carb and cleaned the needle & seat and the float, I installed some new fuel line and a shut off valve. I had to jump it to get it started. Once it started it smoked like mad. I hoped it would stop smoking thinking the muffler had old gas and oil in it I had noticed that the air filter was saturated with oil when I had it off to clean the carb and I blew it out with my aidcompressot. The engine started to run rough so I shut it down. Checked the spark plug and cleaned it put it back in and it would not start. Remembering how the air filter looked I removed it and started and ran it with filter off. Started right up but after a few minutes it was blowing oil mist and oil out of the hose from the breather to the bottom of the air filter box. It was getting worse the longer it ran with no filter in it to catch the oil.. it started to look like Mt St Helen’s bad head gasket? Oil breather? Engine ran strong
Help?