Join Date: Nov 2014
Location: Burlington, Ontario, Canada
While I was getting my ECU and wiring recalls done at the dealer (the bike was at about 24,000km - 15,000mi) I figured I’d get them to check my valves at the same time. The dealer called me and informed me that the plugs weren’t looking very good. I was a little surprised, but I told them to change them and asked to keep the old ones so I could see them.
Sure enough, the plugs were quite fouled up... almost as if the bike is running waaaaay too rich. I was VERY surprised, but I’m glad I took the dealer’s advice and replaced them.
For the 14,000mi service they will already have the tank off, air box off and everything apart to check your valves, so they shouldn't charge you any more for labor to put new plugs in - if needed. I agree that iridium plugs should last a long time, but the cost of these plugs has come down a quite a bit; for the extra $40 or so, it might be worth putting a new set in, ‘just for peace of mind.