Hi! I've posted all of this on another forum too not long ago, I hope is not a problem.. Many times I've ended up here from google and always found very nice technical discussions so I've wanted to post here too. Let's start from the beginning... I've done a 3300km/1 week trip in september with my SF 848 and the bike run flawlessly. Not long after i came back, in the middle of a sunday ride it started having the problem you can hear in the video down below: sluggish response sometimes when opening the throttle, chugging at low rpm and irregular idle, both with cold and hot engine. The first thing I checked was the TPS, and I reset it. It was the first suspect considering I already had problems with it in the past, but leaving aside that I replaced it back in August, even when they go bad, usually resetting it fixes the problem at least for a little, but this time it didn't, so I left it aside. The second thing I did was to check and replace the spark plugs and the problem persisted...when i went to reassemble the fairings i've noticed that the infamous stator connector was half burned, so I've cut it and soldered the wires directly (I already have a Panigale regulator which has its own connectors on the housing so it was redundant anyway). That fixed the problem for half a day, then it slowly reappeared...i thought that the bad connector (1 of the 3 wires didn't have continuity between the 2 sides of the connector) might have damaged the regulator, so I've replaced the regulator too, the problem got a bit less annoying but is still there (it might have been better only because of the different weather and temps when doing the test ride). I then checked the stator and the resistance is around 0.2 ohms, the output AC voltage at 2000 and 6000 rpms is in spec with the workshop manual for all the 3 windings, the regulator output is in spec with its own datasheet (14-15V) and the voltage at the battery while running is around 13.7-14.2V as it always has been. On JPDiag no error codes show up (except a weird DTC code D703 which i couldn't find any info on). After I've replaced the regulator too...I've realized that I could've avoided all of that by testing the bike with the regulator unplugged (not for long but it should run fine only on battery power)...and guess what? the problem is there even only with battery power... (keep in mind I'm also using a new lead acid battery to be sure and not stressing my lithium battery). I've kept using the bike for commuting and the problem slowly got worse and worse, going from not starting without throttle open and not staying on in idle...and now the bike won't even start. In the meantime I've replaced the TPS anyway (also to check if there was still fuel leaking after replacing the throttle shaft seal, and it was perfectly fine), I've bought a used coil and tried it on both cylinders (first in the horizontal and the vertical) but the bike still wouldn't start, I've also checked the spark with all 3 coils and they all work (even tho it seems a bit weak, but I don't have a "Perfect spark" reference video) . I didn't test the fuel pressure but the injectors seems to work fine visually, here's a spark and injector video: Today I've replaced the starter relay (the one with the 30A fuse, it's different from the sbk 848) and removed and cleaned the 3 relays near the ECU (ignition, starter and fan relay, as ducati calls them in the workshop manual) and tried to swap them around, but it still won't fire up. I'm pretty sure it's an electrical problem considering how it appeared from nowhere, bike is at 98'000km now and apart from some TPS problems I had in the past and the burnt regulator in the first months I had it, I've never had any problem. The only thing that remains in my opinion is the timing sensor (and I have one used here to try, it's just mess to reach it, I need to remove the throttle bodies) and maybe ECU? TL;DR: Bike now won't start - Battery is new - TPS is new - Spark plugs are new - Regulator is new - Starter relay is new - Already tried a used spark plug coil and there's spark with it and both the original ones - Injectors are visibly working fine
