my john deere 445 started acting with a sputtering. it got to the point where it ran really rough. determined that only the right side cylinder was working. swapped plugs, than coils from one side to the other and problem stayed on left side. compression seems good (I cant hold thumb on spark plug hole when cranking). spark is good. Tried to clean out all lines with sea foam and carb cleaner. Still only runs on one cylinder. Why the left side? I think there is only one injector feeding both sides, so it just doesn't make any sense. Maybe it is not fuel, but it seems I have eliminated everything else.
