Just to introduce myself Jeep Taylor, Jeffersonville IN. Wifes Jetta, loss of power won't get out of its own way. Has 72,000 miles this is first problem other than couple glow plugs and a GP relay. Could it be egr valve and intake carbon build up? I run bio-diesel that I make in a 50/50 ratio of pump diesel and my fuel. Also with the mileage do I need to be ready for a timing belt soon. Thanks. Sorry for the long post. Jeep