lower bank does not fire up

[Jeff B]

How do the lower plugs look after you try running it? Do they smell like fuel?

[Darrell]

Hey Franco! Did you sort that problem out yet? I'm curious what you found.

[franco]

Have you confirmed you have a good spark on all 4 cylinders with the “same” spark plug or the plug destined for each individual cylinder?

Hi, I checked with plugs destined for each individual cylinder
and saw the sparking "simultaneously".

[franco]

How do the lower plugs look after you try running it? Do they smell like fuel?

Hi, they looked like a man recovered from an ocean of gasoline...

[franco]

Hey Franco! Did you sort that problem out yet? I'm curious what you found.

Hi Darrell,
I took a lot of time off (due to delusion too) and concentrated myself elsewhere.
I will renew my attack in the next days.

[franco]

Start with disconnecting all lights etc...
Also pv module off,servo off
Run it only with the cdi ,instal an earth wire from the battery directly to the frame
Check the rectifier is earthed too

See what happens then,any improvement?

Hi, thanks for advice,
I will try your line of action in order to isolate electrics faults if they're the culprit.

[silverstrom]

Have you checked to make sure that opposite corners are at TDC when they are supposed to be. During a full rebuild it is possible to get it wrong.

[Jeff B]

How do the lower plugs look after you try running it? Do they smell like fuel?

Hi, they looked like a man recovered from an ocean of gasoline...

Are you certain that it’s not a carb issue? Sounds like it could be flooding the lower cylinders.