My Ducati Won't turn on after 2 years of no activity

[Juanchojt]

New update: The timing belt is intact and appears to be in good condition. Here is the video:

https://youtube.com/shorts/bVtvMjHaBsM?feature=share

The next step is to pull the cylinder head to see what's happening inside.

Regarding the spark plugs: I went to AutoZone, and they recommended the NGK DCPR8E based on my bike's year, make, and model. Previously, I was running Champion RA6HC. Do you think the cross-reference could be the issue? I suspect a piece of the broken plug may have dropped into the cylinder and caused the obstruction/damage.

[stopintime]

Both plugs should be ok and the two sites I checked for "reach" (thread length it seems) list 19mm on both. So, probably correct plugs (even if that doesn't helpp you much...)

[ducpainter]

Those are the correct plugs. If they were too long, both plugs would have been damaged by contact with the piston...No?

[Juanchojt]

Fortunately, I only needed to replace the plug on the vertical cylinder, which was the only one showing impact damage. What internal issues would cause contact with the spark plug?

[stopintime]

As mentioned 1;
belts - if it jumped a tooth or two a valve could suddenly be where it shouldn't

As mentioned 2;
a bent valve (seized?) might also suddenly be where it shouldn't

Which leads back to "As mentioned 3" - heads off and pray , and please remember to take pictures and to share them.

[ducpainter]

I'm going to stand fast that you need to pull that head.