Slow motion

Add, that from 1100 rpm it is no longer noticeable, and if it is hot, it almost did not. If it is cold and the A/C compressor enters the problem.

It can be that it is working in three cylinders or that you have a coil in poor condition

There is a cylinder (the left at all looking at the front car) that if I remove the spark plug cable the engine is destabilized less than doing it with others, but it can be a form of engine compensation. The coil I think is fine since I notice the discharge of tension when I approach the cable to the spark plug. I no longer know what to look at the truth. Anyway thanks for your answers.

Your model is with an independent coil by cylinder, or use one with cables for all cylinders?

You can have a failure in some spark plug or in some cable, if the spark plugs have many km. I would change them before getting older expenses.