Problems with an Hyundai Santamo 2.0 16v

Let's see if someone can help me, I have a 2.0 gasoline santamo that fails a little falls down, I have made the distribution, changed the spark plugs, spark plug wires and coils and keep failing, if it were out of point it would not start at the first and also hear sparks in the cables of spark plugs 2 and 4.
I had thought about the spinning sensor or the phase but the latter does not carry it or at least I have not seen it in the camshafts, but I do not want to change more things without making sure first.
Thanks for everything.

Friend that problem is all the hyunday that bring that engine, I have not seen even one that does not aga, on occasion putting the original air filter of the vehicle is solved in other occasions replacing the engine temperature sensor, what you hear as sparks have also heard it and in three of the 4 cases it was the cylinder head that filters compression but check anyway,