I believe that your fuel pump was seized when you tried to operate it but soon as you took it out and it was shaken it got unstuck. The non-return valve operation sounds normal if you consider that the system operates at 3 bars. I have used good quality “Gates” Fuel hose. When I got it I didn’t thin...

I had the same thoughts when the problem occured. Wiring, coils, power units. A series of thoughts and the expectation of long troubleshooting. Apparently the filter had not been replaced when I took the bike to an authorised Ducati workshop (first and last time) and asked them to check and replace ...

I just finished reinstalling the injectors and replaced the fuel filter.
Took it for a ride on a big avenue with the engine on high loads and it seems ti be fine now!

Compression test with warm engine and throttle fully open showed 145psi on both cylinders.

Today I sent the injectors for inspection and cleaning. The workshop informed me that they were not at their best shape. I also removed the fuel filter only to find that it was COMPLETELY blocked! I really don’t know how fuel was passing through it. I don't know if all those could be the source of t...

Things are starting to look different in respect to the source of the problem. I replaced the spark plugs and swapped coils. I didn't get single cylinder operation (maybe I didn't ride it enough) but I noticed the same thing as before when I removed the spark plugs for inspection. Top cylinder spark...

Thanks. I'll follow this order and give you an update.

Tried the vacuum issue solution. No change. The issue appeared once when the engine had just started. I managed to return home with 100kph and 3.5k rpm max. Problem was limited to minimum. I will start looking into the issue. Measured the alternator. It gives 13.6 volts at 4k rpm with the lights on....

If it was a breather issue wouldn’t it happen all the time? I get the problem only when hot.
I replaced the spark plugs with new but nothing changed.

Any advice appreciated! While riding I started loosing one cylinder. Problem gradually became worse and finally I am only running on one cylinder. If I leave the bike for a while and then start it again it partially works for while.

After one year of works, it is finally ready!

Hello.
Sent you a message .
Thanks.

Today was a nice day as you can see in the photos!

Can you post some pictures of your brake light after swapping to the LED bulb?

Thanks.

And some more photos taken just now with the primer coat applied!

Some photos taken today.