My Engine is knocking
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![Angry](https://www.rx7club.com/images/icons/icon8.gif)
Hey does anyone know why a rotary motor would have a knocking sound to it ? it started not to long ago... it starts kinda hard.... do you think the worst has happened and the motor is blown. it has a mild street port with 3mm apex seals...it has stock boost with 600cc injectors... can some one help me
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