I'm going to abuse your good will some more and hit you with a list of questions I have after digging around under the hood today. I've never had a diesel before, so all this is pretty new to me. Here they are : 1) What is the purpose of all the stuff connected to the oil filler? I'm talking about the tubing going off to the the passenger side of the motor, then there is some contraption there and two sets of plumbing to each side of the intake manifold. 2) What is the thing sticking up from behind the motor, like where the distributor would be? I'm thinking it's a vacuum pump possibly, to generate vacuum for accessories? 3) What is the function of the vacuum line that comes up to the injector pump? 4) How does the fast idle system work? I can see the actuator up at the injector pump, but what drives it? Is it based on coolant temp somehow? 5) What are all the wires that go to the fuel filter on the firewall? 6) How does the "water in fuel" detector work? If the light goes off, what do you do about it? 7) What are the vacuum hoses going to the injectors for? That's it ... for now . Thanks for the help.