It's me again. I have fixed the problem. The injector was broken and I went to a scrap yard bought two of them (one because I managed to snap another injector whilst dismantling the fuel rail).
My conclusion to my problem:
Carbon canister clicking sound, slight loss of power/acceleration, maximum speed 130-140 kmph (70-75 mph), coughy exhaust sound, running like a 2 strokes engine, no warning lights on board... it's most likely a fuel injector's fault.
Engine management warning light on, big loss of power, very shaky car... it's the
Problems with engine revs, cuting out, most likely the butterfly (throtle body). My conclusion from reading so many posts on different renault forums.
I hope this will come at help for other renault coleagus.