UPDATE: The stupid thing is NOT fixed. Grrr. Next step…but back to the original post:
The Triumph 955i’s misfire has been cured with the swap in of a new coil pack. This is just a bit distressing as the bike has less than 3000 miles on it, you’d think the life span would be measured in tens of thousands of miles…but maybe just shy of a decade is the other expiration date. Trying to figure out which cylinder was misfiring was a puzzle–the ODB reader thought the bike was running just fine even when it clearly wasn’t. A friend reminded me I had an infrared thermometer, and the solution was at my fingertips.
This is looking from the front of the bike. You can see that the left cylinder (if you were sitting on the machine) was not really doing much.
I bought some used coil packs on eBay, swapped one in, and the problem is (seemingly) solved. Visually and on a meter the dead coil is identical to the others in the set. Did I mention I kinda hate modern miracle components that it’s nearly impossible to figure out if they’re working or not without advanced test gear?
Now for something other than 45 degrees and rain, please.