Good morning all. My car is a Fiesta power 2005 and, for 6 months now, it has been presenting a huge failure, that started by appearing occasionally but is now quite frequent. It seems to be a spark plugs' failure but it is not. When starting the engine there is no problem, but after a while, the car starts failing, it loses power, chokes and I need to accelerate it so that it sets out and be careful because it suddenly speeds up. The engine trembles terribly and, if the air conditioning is turned on, it is even worse because it is ever more powerless and almost stalls, even though this has ne…
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