Misfire

[motomartin11]

Further Update : the rotor is (hopefully) secured back on the end of the crank.
I have a photo but struggle to post on here / not tech savvy old etc...
Have yet to speak further to my mate but he did explain what he was going to do before executing the repair. I haven't had the chance to speak to him today but I'm inclined to think he would have contacted me had there been any serious issues.
He's been running up the engine regularly to check for misfire etc so I'm sure he wold have mentioned further more serious damage to the crank-he certainly knows what he's doing-been working on jobs I can't do on my bikes for over 25 years so I totally trust his judgement.
The engine did sound like the proverbial bag of nails after I fitted the much quieter 620i cans but I put this down to the clutch and now of course the loose crank rotor. No rumblings or untoward vibration that might indicate to my inexperienced ear serious crank problems but you have me worried Dukedesmo!
I'm now awaiting the CDI pick ups from Electrex which I ordered yesterday but they are caught up in our delightful ongoing Royal Mail's industrial action. These are being fitted purely as a precautionary measure as the motor is stripped as the misfire could have been due to the loose crank rotor as part of the ignition came away with the loose rotor I understand!
Hopefully it will all be re-assembled next week ready for road testing weather permitting.

[Dukedesmo]

Originally Posted by motomartin11

the misfire could have been due to the loose crank rotor as part of the ignition came away with the loose rotor I understand!

Quite possible, the pickups need to be very close to the flywheel (0.4mm IIRC) to get a strong/consistent reading so any variation wouldn't help.

Hopefully all will be well, I only mentioned it because it can be a big deal, mainly on Desmoquattro models IIRC? In fact, Ducati recommend checking the flywheel torque as a service thing and there are numerous fixes, including higher torque settings, strong Loctite and even double nuts to jam one against the other.

But I think you'd know if there was significant damage as there would be play in the crankshaft both visible and audible.

[motomartin11]

Originally Posted by Dukedesmo

Quite possible, the pickups need to be very close to the flywheel (0.4mm IIRC) to get a strong/consistent reading so any variation wouldn't help.

Hopefully all will be well, I only mentioned it because it can be a big deal, mainly on Desmoquattro models IIRC? In fact, Ducati recommend checking the flywheel torque as a service thing and there are numerous fixes, including higher torque settings, strong Loctite and even double nuts to jam one against the other.

But I think you'd know if there was significant damage as there would be play in the crankshaft both visible and audible.

Thanks. I'm sure my mate would have definitely flagged this up had it been a problem.

He's on to other issues now with the fuel sender as the fuel light has never worked. He traced through the loom to find a PO has cut off the feed wire, taped it up and taped over within the loom. Unfortunately -see in my wanted post-the 2 senders I have-one plastic / one metal are of no use so I'm looking for a new one.