Sprung a leak from my fuel filter, i know this because i had an issue with it the day before. And changing the rubber seal on the filter only temporarily remedied the problem. T/A mechanics all were convincing me it was my fuel pump, and that it was and infamous issue among cummins engines. And all made condenscending comments about my choice to change a 39$ fuel filter first, like (oh no, dont trust the mechanic, did you drink allot of vodka, because im russian lol) Needless to say, 39$ and 10 min later, no more fuel leakage. And the crowd of mechanics quietly dispersed. 3 months today, no issues from the fuel pump.