I have a 2003 250 with a 7.3, and 203k miles. It has a horrible oil leak (bout 1/2-1 gal. per week ). I drive between 300-600 miles per week. The leak has been chased down to the injector oil line and the pump its self. All lines have been tighten and sealed, but the pump itself still leaks. Any body else have this problem?
There is a plug on the bottom side of the ICP pump. It looks like you can unscrew it and install a o-ring or something but you can not. The only cure is to replace the high pressure pump. If you remove this plug it will cause damage! This is a common failure and ford has a bulletin on this problem.