Ok so I didn't have a scale to measure such small quantities to weigh the floats, but a bench test of the carbs seemed ok re the float and float valve operation. So now armed with some "Cellulose thinners" or "Laquer thinners", depending on your geographical location. I pulled the carbs off again and rebuilt the number 5/6 carb. Now I know what a proper flow of fuel through the idle jet looks like! Not just trickling or even pouring out as it was before, but a vertical pointed powerful blast...Ah now that is an improvement!
. So powerful that I got it full in the eye as it bounced off my cheek and under my safety glasses!
. Maybe it makes a good eye wash? I don't recommend it though.
I could/should have decided to do the other carbs at that point, but being the proud owner of some pod filters it takes a few short minutes to put the carbs on.
Great result! cylinders 5 and 6 are now running and the bike is even idling ...very happy! But I was still getting some popping and farting from the other 2 carbs. but the 5/6 carb was as smooth as silk. So off they came for a rebuild on the other 2 carbs.
So with a 5 hour group ride set for the following morning to the Mediterranean sea, I managed to get the carbs cleaned and back on the night before. I felt optimistic and thought that would be a proper test run for the bike.
Sure enough the bike idled well with no popping or farting from any carbs. So on that front a success! I didn't do anything other than change cleaning fluid. The Cellulose/Lacquer thinners really is the magic ingredient. I'll never bother with "carb cleaners" again.
The ride was a good test for the cylinders and it's oil drinking issue. Plus the less the perfect honing... I was happy to see that it was still full of oil when I got back.
Normally I'd be putting at least a liter and a half back in after a ride like that. It didn't smoke at all. Success there too! I'll have to look at the plugs later.
The only issue I did have was the temperature gauge hit the red when going slowly through traffic. I had to stop and let it cool for a while. The weather was super hot, probably 45 degrees I think.
The temperature of the bike is fine when moving...the faster the better. but the fan can't seem to cope. I have a manual switched fan which I always switch on immediately when going slowly or stationary. And I keep a very close eye on the temperature gauge.
Maybe a 7 blade fan would be a good idea? as I'm not sure what else I can do to keep it cooler....Still, very happy with how this is running now.