Hi!
The video from yesterday and today. (I put an old oil can for the video to avoid too much noise for my neighbors 😅
Yes, I see in the hose round bubbles (~2mm diameter), and a lot micro bubbles than came from the valve and they make the big bubbles bigger.
So, I replaced yesterday all fuel hose by the smallest than I found, there is less bubbles but there are always some. I put this morning some sealant between the valve and the body (without dismounting the valve), I hope it will solve the problem (I only see bubbles after the valve, not before).
I put my solenoid on a foam square, and it doesn't touch the engine so it's cold during running.
All my electric cables from the ignition and the valve are in a sheath.
I will give you some news when I will try again.