I took carbs out and then i drained them empty.
Draining order and how much there was gasoline:
1 carb 7ml
2 carb over 25ml
4 carb over 25ml
3 carb 25ml
I havent yet tear down the carburetors but clearly there is a problem in 1 carbutetor.

So my bike started to pull badly on low rpm. I had to drive 400 kilometres because I was long away from home. Firstly it sound like its running on 3 but when it takes 6k rpm it sounds normal again. But now i think its running on 3 cylinders all time and cant go above 120 km/h. I have driven only 2k kilometres on my sparkplugs but i tested my old plugs and it works the same way. 1 cylinder exhaust pipe doesnt heat as much as others. When I emptied carburetors there was much less gasoline on 1 carburetor than others. So can a bad carb balance make that one cylinder isn't running or should I take carbs out and try to clean them? It also backfires on exhaust pipe if accelerate full throttle and then let it go.


 So what should i try first? TPS, sync carbutetors or take carbs out and clean.

I blew some air to both of the pipes and its leaking from that rainwater pipe. I can just block that hose and its fine? Rainwater just stays under the cap and it will probably rust even more.