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revs or under

  1. Misfiring at high revs/under load

    Alfa 147, 156 & GT
    My newly-purchased '99 156 1.8 Twinspark runs very sweetly under normal conditions but if I put my foot down the engine misfires and "flattens" out. The previous owner drove it very gently and with low mileage. I have put some Optimax and fuel injector cleaner in and the car has improved a...
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