Quote:
Originally Posted by JHR
I wonder if the coils are more likely to snap if the engine is not completely cooled down? . I could see how a warm engine would make the coil fitting tighter on the spark plug as well as making the coil plastic weaker.
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No issues here, and the car was hot when I did it. I had just driven it for an hour, parked it, then started changing the plugs. The trick is to keep pulling with consistent force I think. There is a vacuum seal formed, you need to overcome it with gradual increased force. Not a yank.