[size=100] Hi, how are you ..... I have a 2006 Chevrolet Optra Mechanic Car, this one started to give me failures that in the morning when I turn it on it tries to start but does not start, so I have to turn it on again and in the second or third time What I start is that it already turns on everything normal. This when it starts, it continues well until a good time (approximately 20 minutes) and in that period of time it is more or less, the engine enters a relapse of its gear and stays there as if the high current fails and loses its Total stability and performance is intermingled in the least as it turns off but it is still corroving and does not obey to accelerate because it is turned off, and when it is turned on again if it manages to ignite it is still in the same fault where it is left corroving. Until it goes out. I have to wait in quotes for about 10 minutes and when I give it the ignition of one or two attempts again, it normally turns on its normal operation, but after another time of the 20 minutes or so it returns and gives me the same fault and so on . He checked where a known mechanic and took the pressure of the gasoline pump and gave an excessive measure by which he determined that the regulating valve that goes after the pump inside the pump system was not working, because which proceeded to change this regulator and at the same time the external fuel filter was also changed, and again taking its measurement and the pressure gave it in its normality, but it continued with the same fault described above and no change was felt with the things they did to him, NOTE: With a minimum knowledge of mechanics in general that I have, I have the dilemma that it may be the high coil that is giving this problem, but I want to know other opinions before changing it. Thank you for your cooperation in this regard, thank you very much. [/Size]