I'm starting to sweat the possibility that my spark plugs are loose, or will loosen, after having them replaced in conjunction with a pulley. I read, perhaps here at MINI2, that someone had actually blown a plug right out of the head, after it had loosened, doing a lot of damage. I was just over at the Web Motorsports site, and a guy who had his pulley done the same weekend as mine, said ALL of his plugs loosened! Of course, tonight's project will be to check the tightness of my plugs; is the loosening of plugs a common problem? Does scheduled maintenance include checking the plug torque?