I have the P0016 and P0017 codes. Pulse wheel part numbers are centered in the bore on both right and left bank. trouble is, I do not have any numbers on my crank pulley to tell me if I am at the 305 degree position. There is a small key-like object on the pulley, assuming it is either TDC or the 40 degree ATDC. Any help would be appreciated. 2008 E350 W2111 with M272 engine.