I have a 2004 Jetta TDI PD with 150,000 miles on it. I was driving on a highway a few days ago and suddenly without warning i realized my engine had suddenly cut off while rolling off an exit ramp. I had the car towed to my home and when I took the fuel-line coming from the lift-pump off the fuel filter the car started. The same issue happened a few more times, and every time I take that fuel line off the fuel filter and cycle the engine a few times the car starts. Does anyone have any idea what may cause this problem…appreciate any suggestions.