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Originally Posted by Numark318i
so i have nmoticed that when i turn my car off the engine keeps turning and it sounds like it rotates a couple of times after the explosions stop.
What could be causing this?
I put 91 octane in the car.
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Do you mean it's "dieseling"? (like running on) If that's the case after you put in 91 octane could be a carbon build up causing pre-ignition. When was last plug change? Does it do it everytime you turn it off or only after certain circumstances? (more info please)