OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines Chokeomatic sending out fireworks from muffler!

I would suggest that maybe the packing in the exhaust that acts as a spark arrestor has burnt out over the years, the black soot on the base seems normal on the older victas due to burning a bit of oil, etc over the years.

If there is actual flames coming out the muffler I would be thinking that maybe the exhaust valve is no longer sealing 100% also.