I get a very intermittent low rev "soft" missfire on my 900ss ie. Almost a sense of a slight blowback via the airbox as well. Noticeable sometimes when pulling away in first gear at the point where the clutch is fully engaged. Sometimes it will do the same when accelerating from low rev in other gears. It is really intermittent - ie might notice it two or three times on a 50 mile ride. Any ideas?
when were the sparkplugs last changed …...also check in the tank if there is any water in there check the easy things first
