Problems with Opel Corsa Sport 95 1400cc

Good I have the next problem with a problem with Opel Corsa Sport 95 1400cc 16VV,
it happens that it has no power, just match a little until after 2500 revolutions cold sometimes as it works a little better but already hot worsens is as if one accelerated and stayed stagnant until the time begins to climb revolutions little by little.
Thanks for your help.

Czech spark plugs, spark plug wires and coil is as normal that corduroy in the corsaes, when you want to accelerate for example in an overtaking, the vehicle stays and after a few seconds it is triggered?

I already changed the cables and spark plugs only that the spark plugs that I put are simple and out there that they have to be of double electrode and the boy's coil to check it the problem of the car is grouped more when one occupies making the exit more if it is a slope if I stop at all practically it does not go up.
Thank you very much for the help.

When the vehicle walks and disconnecting a spark plug cable, the current jumps or with force, the spark is heard, or only do you get it a lot to mass?

But what tests have you done? ... Do you say how hot the situation is grouped, have you not reviewed your temperature sensor, gas pressure, pressure regulator or your MAP ... is they called Chevy? ..Jeje ... or it's another guy, I try to support comrade