White smoke after the car is running.

I have a 2003 pole and the engine runs out of force, I have taken it to mechanics and do not find the fault, every time I go they take me a lot ... I have given me the correct answer to the problem that the Opel had ....

Son check that the car is not losing brake league, or brake fluid; I spent a fiat that had and was the league bomb that had bad stamps, the fluid was colo to Hidroback and from there to the engine, when the hydroback was disassembled was full of league;

It is important to put data from the vehicle to saver that we are talking, the white smoke at the start is normal, if then the level of the refrigerant fluid does, if mysteriously descend then then you can have packaging or cylinder head problems, the other thing you can do is take out the spark plugs and check what color they come out.

The problem is an Opel Corsa 1.7 eco.

If it is then the problem can be of injectors that do not work.