Originally Posted by b18allday
i've read that it could be oil. it smokes on the runners right where the header meets the head. could it be oil or just a gasket leak. i dont know what burning oil smells like but it smells like exhaust fumes. the color is gray
If it's right at the ports then it's most likely just an exhaust leak from a faulty header gasket. Replace it, there pretty cheap, and see what happens. Oil has a bluish tint to it and to me smells like hot tar, but maybe that's just me.