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i have 20 hp twin cy briggs engine and when i take the choke off the engine stumbles then stalls . what do look for ive rebulit the carb and still the same results. i replaced the carb and still the same results , whats next
@lawnmowerman, paul , Some things to check for. Bad fuel(install fresh good fuel), possible weak fuel pump(if equipped), pinched/collapsing fuel hose, clogged fuel filter(unhook spark plugs, remove fuel line at carb. and check for fuel flow, will have to crank engine if equipped with pump), clogged vent hole gas cap(try running with cap loose or removed), carb. settings incorrect, is the replacement carb. new if not still could be a internal carb. issue with dirt blocking ports,etc.. If all looks good get your self a can of starter fluid/spray can and with engine running spray around carb. base/intake/head gasket to see if you have a bad gasket, loose head bolts. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
I am having the exact same problem. Just replaced my carb. It ran for two mows, now it struggles to start and dies .
