Thanks for all the replies.
I should start from the beginning.
In 2018 I serviced the bike at the Honda dealer in my hometown, Krakow, Poland. Long story short, they messed up my rear wheel hub and a few other things and, because I did not know any better mechanic shop, I said to myself that from now on I would service the bike myself. They told me that the cam chains need to be replaced soon. I don't want to go into if this was necessary or not but the cam got more and more noisy over time. In 2019 I decided to replace the tensioners, it didn't help so I replaced the cam chains with the dedicated DID chains.
This was my first complicated bike job so I of course messed it up. I did not put my owner marks when disassembling and I put the bike together using the factory markings. I set the timing wrong a little so the bike was starting but it couldn't rev above around 4.5-5k. Thanks to the help of VFRdiscussion members I diagnosed a lot of components and came to the conclusion that there was something wrong with the cam chains (sic!). So I decided to go back to the old ones to test it. It didn't help but during the chains replacement, I figured out that I got the timing wrong and I set the timing correctly this time. The bike finally worked as expected but on the old chains so I was back to square 1. After all the trouble I went through, I didn't have enough time and energy to replace it with the new chains so I left it as it was and ignored the nose. I used the bike from time to time.
Then the pandemic hit, we got locked down, etc. After that my father passed away and I was devastated for a long time. I didn't use the bike at all. I started riding again last year. I noticed that the noise gets louder and more annoying. Finally few weeks ago I decided to replace the chains with the DID chains I got.
This time I did my own markings, photo-documented the state of the things before, and checked the timing of both front and rear cam shafts a few times after the replacement. It looked exactly as before. I put the bike together and to my surprise, it did not start. The rest you already know.
What was removed from the bike during the job:
- tank
- airbox
- coolers
- clutch cover and everything under
- valve covers
- ignition coils
Yes
Tried that, did not help
Yes
Yes, no fault codes. I even disconnected the plug wonder the airbox to check if this would end up with an FI error and it did.
Yes
Yes, I've checked it a few times. No spark.
Thanks for the suggestion. I will test it today after work. I'll get back to you with the results.
Good to know.
In general, like @airwalk said, it looks like the computer does not tell the coils to spark for some reason..
Thanks a lot for your help @Grum @airwalk