Hi, feedback time!
So I took the carb apart AGAIN (sigh).
I checked every port/hole/circuit (
how do you call the "pipes" molded in the carb that the gas flows in???).
Everything
looked clear.
I could see the holes in the idle jet tube by taking off the idle screw. They're big enough to put a 1 mm drill bit. Anyways, big holes and I could see nothing seemed gunked up. When I blew carb cleaner from the intake of the carb into the idle circuit it would flow, etc...
BTW, I didn't dare take the idle jet out. I put a drill bit (1.5 mm, but I think a 1.75 mm would be better, 2 mm is too big) inside, a bit of leather in order not to make any marks on the tube and a good set of pliers. I tried to wiggle it a little, but...naaaah, I didn't feel like it.
Left the thing alone. I felt that it was to big a risk to take.
Making a long story short, I ended taking a wire (bike cable that I took apart to use only one slim wire) and sticking it up
...the idle tube until it came out the other side.
I did check if I could see any light out of there (with a powerfull tactical light) and it didn't seem so good. I didn't have any comparison picture though.
Pushing the wire through didn't make any gunk come out. The wire was clean.
I made it go back and forth a couple of times anyways, blew air as I could (mouth...).
I then sent some more carb cleaner in every opening that led to this idle system. I did see it come out and making a geyser under the throttle slide.
All the other carb circuits were clean and carb cleaner came out of them (bypass starter, main circuit and idle circuit).
Guessed the job was done, even if I still didn't see anything come out (dirt, gunk, whatever...).
Put the carb back on and...it f***ing works!!!
I let it idle, pushed the revs...only on the stand as the side belt casing is off at the moment.
Made it turn fast on stand and stopped it at once with the rear brake to see if idle was held and still level. Ok!
Superbe!!!
As I've been taking this carb apart many times, I wouldn't want to stay stranded at my next rally (end of october). I was thinking of changing the gasket kit.
What do you think of this one :
https://www.cmsnl.com/honda-nb50m-1985- ... 6-ZsmgzbIU
The reeds gaskets are new, the 2 inlet o-rings at the carb mounting too.
The fuel lines are shot. We have ethanol in our gas here (5 to 8% on regular unleaded gas and 10% in the other unleaded pump gas available). I've noticed that it harms the rubbers.
Hopefully I had a leftover of the fuel lines I had already changed when I got TT at first. It lasted around 6 years or so.
Not so much.
MANY thanks to all the contributors here.
Oh, and I now have 3 choke starters (one used that works ok). I can live some years of tranquility!