Riding lawn mower blows exhaust thru carb after start. Decompression mechanism is not disengaging. Any ideas why?
I have a riding lawn mower that hit a brick. It's a briggs 17.5 engine, now it blows exhaust through the carb after start, the decompression mechanism is not disengaging. I disassembled the engine and deactivated the decompression mechanism and the engine runs normal but needs a jump start from my truck battery. It is disassembled again, can't find anything wrong. Any ideas?