I should have given more info. My car is a 1989 325i, stick with 131000 miles on it. As far as I know all of the ignition and starting systems are original except for the starter (which I replaced 1 month ago), and the main relay which was replaced six months ago. O2 sensor is original also (again, as far as I know). It has a new vavle cover gasket that I replaced after adjusting my vavles eight months ago. Any, help would be greatly appreciated,