Both2 & 4 strokes can suffer from fuel starvation problems in similar manners.Thanks Paul, it seems like mine has a different problem than the 2 stroke. I don't know if I forgot to mention that Mine is a 4-stroke also mine will not ever run smoothly and will rev-up and stall when the choke is pushed in/ rev up un controllably when the choke is out.
Seems like fully cleaning the carb is the best option, any other ideas of what it might be?
Could be, although the surging thing has me puzzled. Could be debris floating around, then being sucked up into a jet or passageway, & then being released again? Before taking the carb off, try dropping the float bowl, turn the gas on, & work the float up & down to flow fuel through the float valve. If there is any debris in the bowl, I would suggest cleaning the carb.Paul, I have checked all the carburettor/hoses and they all seem good, can the symptoms I have described not be explained by a dirty carburettor alone?