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faulty engine

  1. Cee’d GT engine sputtering

    Pro_Cee'd GT 2013-2018
    Hi guys, some advice please, when accelerating hard (thrashing the car almost) the engine start sputtering, however yesterday it did this so I slowed down and then the engine just shut off, it did start up again but I was just wondering what might cause this? My thought was a faulty spark plug...