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« on: January 15, 2018, 10:21:52 pm »
Hello, All,
(sorry beforehand for the lengthy post...)
During my Alps trip this summer, my K1300S broke down for the second time in 14000 kilometers.
The first time (it was in 2016, in Wales, at 98000 km), 2 coils had broken down. That repair, also the 4 spark plugs were replaced. I then blaimed it on having riden through rather big flakes of water, but then again, the second (similar) breakdown, my bike had't seen any water...
The second time (this summer, in the Alps, at 112000 km), one coil had broken down, and also the lambda probe had gone down. I saw the one spark plug at that time, and I can assure you : for a spark plug supposed to be replaced only after 30000km, that specific one had completely gone after these 14000km : the metal was level to the porcelain. I hadn't noticed any reduced power whatsoever (even if my bike only has 79 kW = 107 hp)
Twice in 2 years, costing 450€ and 675€ respectively. Twice “abandoned†by the bike on a holiday trip. One would consider selling the bike for less. If only it weren't such a pleasant bike to ride.
At some point in time, I had wondered if it could have something to do with an accident in Jan 2016 (when my parked bike was pushed forward by a female parking car driver, over its sidestand, and brutally fell down on its left side). Because before that Jan 2016 accident I'd never had problems, only thereafter followed by these 2 similar breakdowns. And “had the first repair been done properly in the first place ?†is a question I'm still asking myself nowadays. Or maybe it was me using the bike in a bad way, e.g. by only exceptionally waiting till the yellow triangle in the dashboard is extinguished before starting the engine (maybe the voltage is not yet fully stabilised then ?). Or by cutting the engine by unfolding (correct English ?) the sidestand in first gear to stop it and immediately have it in first gear to be put on its sidestand ? Or by systematically using 95 octane fuel (the bike should be able to use such fuel, though ?). Or maybe the bike is "just too old", and these breakdowns are just one of these (regularly) reappearing problems ?
So maybe some mechanically instructed riders could give more clues as to the probability of this happening within the next tens of thousands of kilometers ? Could a faulty ECU be playing me tricks, yes or no since that accident ? Some sensor (IAT, MAF, others) which silently deregulates the engine management causing breakdowns in the long run ? I will hopefully soon be able to log some useful ECU parameters while riding (if only I knew which ones are really useful). I look forward to hear the opinion of some more experienced technicians than I am, or to hear from experiences of other riders having experienced the same or similar breakdowns.