Hi, everyone. I have an Alfa Romeo 1998 engine 1.6 twin spark and, from one moment to the next, it began failing when starting the engine. What happens is that, once I start it, I accelerate it suddenly and the engine backfires, apparently through the butterfly valve. This does not happen if I accelerate it slowly. Even more, if I release the accelerator pedal suddenly, the engine stalls. Every time I accelerate the car, the radiator fan remains turned on and the speed starts fluctuating by itself. Another thing is that there is a red injectionlike light on the dashboard. I've changed the 8 sp…
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