240hrs due for 4th piston,fouled 1 denso at beginning with stock needle,switched to NEC/NED needle and NGK plugs,havent had a problem since,but usually i change plug @30/35hrs although i ran 1 for the entire life of the piston no probs (for me thats usually@60-80hrs 200)
I do carry a spare on long/solo riding
Different 2t oils seem to vary a bit in how much residue accumulates on plug,and plug colour
__________________
2013 ec200r
|