carburetor

You already checked that it does not grab air by the admission or base of the carburetor, rock a little
carburetor cleaner in aerosol to be sure that there are no leaks, broken emptiness hoses, of the brake boster, tight apron, water in gasoline, backward time etc, the spases will be correct,
luck and greetings

How is the acceleration jerk? , strength, etc ... the coil ???

Thank you all for your help. I managed to correct the problem: the damage was in internal needles that finalize that carburetor, regulate the amount of gasoline that the carburetor supplies to the engine, in fact it is the first time that I have that problem and I did not know that in that carburetor those needles are calibrated of factory but they have a screw that can sometimes loosen and increase the supply of fuel, eye clarifies are not the ones that are not the mixture. I hope my problem helps the other colleagues on the page, personally I think that mechanics is like medicine profession is a constant learning process.
Thank you.

It is appreciated that you comment on the solution, since it is not a very abitual custom here and also as you say, it is a good feedback for nosos. thank you.