Hi Juaquin my name is Rosnel I'm a mechanic. Do not take your car to the workshop before making an inspection yourself, it is easy. Before I tell you what to do you have to be sure that your vehicle has the following characteristics.
4 -cylinder engine online, front traction, 1240 cc, 4 valves per cylinder, double camshaft, indirect multipuntos, 5 speeds, gasoline fuel.
If your car has those characteristics you must discard the possibilities of possible failures before buying spare parts, spending money and wasting valuable time.
When the cars are electronic the mechanics are confused because they are new technology but finally it is only care and malice to solve the failures.
When a vehicle starts but does not raise power you have a problem in the spark plug coils. You realize because the smell of gasoline comes out of the mufla when you accelerate it.
With the car started, remove the chupon one of the spark plugs, you take it out and put it again with a pliers that have an insulator so that the current does not pull. If you notice that the engine is lowered or disturbed that indicates that the coil is fine, but if you do nothing you have the bad coil. you buy it and change it. Anything you write to me