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hissing while accelerating

  1. Hissing Sound On Load

    Engine and Technical Discussion
    Hello, I have a 1.6 T-GDI Kona and bought it as a used car with nearly 2000 miles. I brought the car to the service as soon as I bought it (almost 2 months ago). They told me the car is perfect and there is no even a single problem. But there is a hissing / air sucking sound when the engine is...