Hi guys,on my regular 160 2-stroke,i decided to replace the points-condensor-plug.this was achieved succsesfully and reset the timming as per previous post(3 months ago)the mower starts first time with half a pull,idles and revs apon request.when mowing under load (long grass) it starts to back fire through the carby(plastic which i rebuilt)where it locks on to the barrell.plenty of fuel flow.so i am stummped-may-be my timming is a smige out...ken
