I have had i bit of a nightmare over the last couple of days, the bike sometimes starts then bogs down and was a bi**h to start, changed the plug and woosh of it when for a while and the then back to square one. I found the problem a doogie coil, new one ordered. However the weired bit is wilst try to dianose the coil the bike started to what i can only say is a backfire,but more like a air line shoooing noise, my question is could this be a symptom of erratict spark or something else????????
compression feels ok new pistion and rings about 3 months ago, I thought it could be plugs but 5 different plugs? so tested the coil its goosed. the noise from the exstaut is my main consern i think i will have to wait and see what happens when the new coil is fitted ( when it arrives)
