Just got new injectors in. Engine has what I would say is a half dead or dead cylinder when cold start (10-20degrees)and lot of white smoke. After about 500-600 miles am showing about 1 gallon over on oil dipstick. When warmed up seems better but under medium or better acceleration there is a definite hammering knock on a cylinder (20003 LB7 by the way).

Also have a small fuel leak at ECM banjo fitting rear. Is there no gaskets on these??? She's friggin tight, man!!

Will we be looking at a return line leak??? or a stuck injector??? or what???

Thanks Diesel Dudes!!!!

Are you sure that it is fuel in the oil, or antifreeze? It is also possible that maybe an injector sleeve that was pulled when the injectors were replaced, and not fully seated into the head. Just some ideas.