View Full Version : Question regarding CCVV and gas mileage

02-01-2009, 12:38 PM
I drive a '97 328i. I'm getting my crankcase vent valve (CCVV) replaced this Wednesday (4 Feb). It has actually been in need of replacement since right before I went on a three-month deployment in September. So scheduling conflict there, but I digress. Since I returned in December I've noticed that my gas mileage has gotten worse. I know that the bad valve has been causing some engine oil to get burned off, but would it also effect my gas mileage?

I do have one other question. My roommate, who kindly drove the car and generally took care of it while I was gone, noticed some steering wheel play when braking. The first thing that comes to my mind is the alignment. Is that a good guess at the problem.