1999 Mack 460 engine leaking fuel into oil pan, Have replaced all O ring on injectors and injection pumps twice hasnt helped .what could be the problem???? any possability the fuel booster pump could be leaking

[Rurey logging]

 

[Onyx610]

Could be leaking out past the shaft on the fuel pump into the timing cover. 

[Joey Mack]

Dammit!!!!  seem's to be a trend with this issue...   I am on my 3rd engine repair due to diesel in the crankcase, in as many months..   The lift pump, is likely the cause.. jojo