2007 with a high pressure oil leak. The air test revealed a leak on the drivers side. (See picture) I have already replaced the STC fitting, ball cup o-rings on the oil rail, injector o-rings, dummy plugs, stand pipes and the IPR valve looks fine. The leak is coming from the hole in the bottom right corner of the picture.

 

is it supposed to have a plug there ?
just curious

 

No