I have had poor gas milage since I have bought my car, but this morning I filled up, and I am getting 16 mpg! It Used to be 18 but now has dropped to the point where something has to be wrong. I cleaned out the EGR valve passage ways, and the engine light went off. I'm not sure what is wrong. Could it be the cat convertor? I also hear a small click at lower rpm, but once it gets passed 1800 the engine just drowns it out. The car has 70k miles on it, could it be time for new plugs?
