You should do some study on it, but here's the short answer: the diesel engine is compression ignited, instead of spark ignited like a gas motor. During the compression stroke, the air in the cylinder rises considerably in temperature (basic physics), and in a diesel this is used to ignite the fuel that is injected in.okay, here's a dumb question: What are Glow Plugs? Same as Sprk Plugs in a gasoline engine?
Actually on our TDIs the glow plugs can stay energized in cold weather until 1) the engine warms up enough and/or 2)a certain RPM is reached (I believe around 2500 or so). This apparently smooths the rough running of the cold engine a bit, and gets things warmed up a little more quickly.The glow plug only does work prior to starting--it is turned off when its either warm enough (ambient air temp) or when the vehicle is running. Otherwise, it would burn out, much like a lightbulb.
As always, it's a function of what maintenance has and has not been completed. At 80k miles, that list could be extensive.Also, what kind of repairs should I be looking at with 80k miles?
I fill up twice a week. Used to fill up every day, sometimes in the morning and again in late afternoon! That really sucked! Yeah, I get mileage. Big time.I use my car for work(we get mileage), used to drive a 96 Saturn. Told my boss today that I filled up a week ago and still have a half tank with my Jetta, used to fill up 2x with my Saturn. His jaw dropped.
Try this link:Thanks for the tip on that "How to buy" FAQ, but i can't seem to make the link work for me at all. Nothing comes up on a search, either . . 'lil help? many thanks.