by ron guff
(ff ca usa)
engine ran fine all year. all of a sudden it starts with choke no problem but dies at low rpm. barely can get it into gear and then dies at 850-1000 rpm. we can force it to higher rpm and runs ok..changed fuel water separator filter and unit, fuel filter,as well as low pressure fuel pump. all this helped a little but didn't fix the issue . suggestions. very clean engine, figure something small but critical