I tell you, I just came from the mechanic, he tried the car all day and it turns out that I do not fail him, I don't know why this car just fails with me

well, like it, he put the scan to the car and detect the following.
1. One of the cylinders is not working 100%, apparently when the car starts the march it is at 80%, but to the extent that the car runs, it reaches its 100%, I do not know if this will have to do with the problem: confused:
2. By not detecting more failures with the SCAner, I check the fuel pump, which was fine, but the fuel filter turns out that it was fully covered, according to what the mechanic told me, it was only 30% of the filter capacity, it is apparently the fuel filter had never been changed, we are talking about 10 years. (I attach photo)
3. I check the injectors and were totally dirty, apparently the product that the fuel filter no longer served, so clean them them
4. Given the suspicion that the fuel filter had never changed it, he recommends that the spark plugs change, since they could never have been changed, nor will I change the morning day to see how they are, there I put photos to look at them and tell me how it is.
Something that I forget to mention from the beginning and I think it is important, due to my inexperience with the cars, when I bought the car, the Calister was disconnected and when I took it to revision I made the mechanic connect it again, I do not know if this unleashed all this problem, I attach a photo of this device. (attached photo)
I already brought the car to the house and on the workshop journey here, I do not fail me and even notice a small improvement in motor development, but we are going to see, I leave a photo of the fuel filter to look at it.
Well, I attach a photo, the sensor that changes, of the entire engine and the relaxy box, check them out and tell me if there is something wrong