Quote Originally Posted by up in boost View Post
Yeah but i wonder what caused the car to start getting knock... Well im just wanting to know cause im interesting in buying one and i dont want to buy one that has a chipped piston As the OP stated that he didnt even know that the motor was hurt nor was the car acting up after that....... yet again, a smashed up spark plug is a real good indication of something real bad......
The best explanation i've heard here is about the ring gaps being too tight from the factory. If that's the case then I'd be worried about every GTP out there. Personally if pistons chip out when running premium fuel then there is a problem with the design from the factory. Do these cars have knock sensors? I'm curious to what kind of protection is built into them/programmed in the ecu?