Review on Denso 671 6241 Coil Over Plug by Carlos Macy

So the plastic/rubber used may not be suitable for the temperature. Or the terminal at the end of the spark plug must be too good. I had a misfire problem on cylinders 4, 5 and 6 (not associated with this) and I went to remove the coil packs and they wouldn't come loose, kept pulling, eventually it came loose from the top of the trunk. For the sake of my life if I can't get the boot out to get the spark plugs out without wrecking these boots. Which were expensive enough not to want to tear them up. Therefore, my rating stars are based on the difficulties I encountered after installing it.