Hello Board, I have been meaning to ask the question, but I have never gotten around to it. Now is the time!

My #4 spark plug will not tighten at all, it seems that the previous owner somehow ruined the threading in that hole. With the plug wire on it, I can physically feel the spark popping and jumping. Is there any damage or performance loss that can be linked to this loose spark plug??

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1987 mercedes 300E
1995 e320 conversion(hated the 300e grill)
HID/Xenon (D2S)
Keyless Entry
Monochromatic Paint (Custom Blue)
Smoked Tails
Flat Badged (front)
Debadged (rear)
custom "carbon fiber" console
18 inch HP EVO rims
Sold! Now I drive a Monte Carlo SS
http://memimage.cardomain.net/member.../352975_67.jpg
http://memimage.cardomain.net/member.../748335_24.jpg