I have a 03 cl-s 6 speed that has a recently replaced throttle body witch removed the previous check engine light, less than 2 days later it came back on, I scanned it and got 2 new codes, PO172 Fuel System Too Rich (Bank 1) and PO172 FUEL METERING B1 OUT OF SPEC. I'm sure there related and know that is may be from a vacuum leak I just can't seem to find a leek or where it may be. I know I'm burning my spark plug out by drive too rich. Has anybody had this problem or may know the solution any help will be greatly appreciated?