Wolsvagen Vento 1.8 - Black smoke, long games

Well friends, pleasure in greeting them all, I am new on the page and I tell you my problem.
My vehicle is a Wolsvagen Vento 1.8 year 97, a while ago it is with starting problems, the first game turns off well when turning it off and turning again cost a lot sometimes it had to wait and turn on, it also began to pull but walked.
To all this was done by a mechanic the change of the complete intoxica kit, changing, disc, press, intoxicated piola etc, etc, etc.
The car is standing for almost 2 months.
Today, after the repair of the intoxication kit when sometimes turned on, sometimes not, when I manage to turn it on the revolutions, I have to be accelerating it, it comes out quite a black smoke by the escape walking down to pull until losing strength and goes out being almost impossible to turn it on again.
Checking the spark plugs come out black but dry.
The benzine hose was checked by observing that it has little pressure force, suspecting that the benzine pump can be in its last hours.
It was checked if the engine is ready and if it is.
The distributor was also reviewed is in good position.
I don't understand what can be.
That's why I ask you for your help, thank you very much
I expect your answers.

Hello, one of the sensors that can be disconnected or damaged is the temperature sendor of the engine coolant if this sensor fails that the fuel will be very rich and that is why the spark plugs come out black that indicates excess fuel is also going to delay in the ite

Hi Azdvj ", welcome to this interesting forum !!, I agree with Maurog in which you check the temperature sensor, also add that I think the clutch has little to do at the start ... and would you do well to check the pressure with a manometer in the injection ramp, but the first thing I would do would be to look at the ignition and see if" pull spark " or coil, the black smoke = gasoline without burning. See to see what you tell us.

Thank you friends, let's proceed with that and tell you.

Hello!.
I think the problem lies in the fuel pump. I had a similar problem, and was solved by changing it.
This gave a much smaller fuel pressure than the necessary, then the fuel, instead of pulvering as it should, came out in thick drops, moistening the spark plugs, which caused the consequent black smoke (no gasoline), until the vehicle went out, and did not turn on until the spark plugs dried again.
I hope my opinion serves you. Luck!