I was playing around with my MC18 again yesterday, it previously seemd fine but was obviously just the new plugs that were sparking well that made me think that. I rode it and it was revving smoothly and seemed to be ok (very short ride only - less than a mile), this was with cleaned carbs the new X and Y pieces.
Anyway, Barry_MC21 came round yesterday (4 NSRs together
)
Barry took my 18 out for a little spin and I followed him on my 28, half a mile down the road and its back firing on one cylinder....the plug fouled again. When we got it back home I took the plug out and half was black and oily, the other half appeared clean almost like new
It was really strange, how could only one side of the plug foul up? bad mixture, bad electics, blown crank seals??? Any ideas?