Probemas with a corsa evolution of 2007

hello
how I do all that tell me what to do in that type of engines I have no idea

If it was a problem of injectors, would you always lose strength
that km has?

He has 134000 and I don't know what to do so he doesn't lose strength

Check the Degasolina pressure. Place a gauge in the gas input line, or in a valve (with a bug of pneumatic) that are to bring in the injector rail, either of the two is a pump line, the work pressure must be between 35 to 40 psi stable, if when the pressure is questioned, the problem is the gasoline line, if the pressure does not hold when you turn off when you turn off the pump problem Dring, if the pressure is not in the indicated range
and if it is less than 30 psi review it is gasoline supply: covered tubes, poor pump. Dirty bomb prefilter, beaten tank and obassess the gasoline outlet, broken mangary eye of the tank, or poor regulator
for this tests you must lower tank.
And try the pump outside

eye carefully when handling gasoline, because it is very unmarried and you can cause a fire accident, every manger must be well adjusted with a clamp and not spark near gasoline
if you know little about the subject, look for someone who knows if you know not to go to be that you finish burning your vehicle.

GREETINGS

Friend actually I doubt that you have gas pressure problems, if your problem actually has nothing to do with the engine tuning, check the gas output, Catalitical Converter, silencers you can have a loss of power due to obstruction in the exit of the exhaust gases, that generates a lot of power loss in the Corsa,