Ok so any of your guys have any ideas about these symptoms, my morbark model 17 has a John Deere turbo diesel in it and today after running it for a while I idled it down and noticed that it was idling high, 1000rpm as opposed to usual 500. I checked that the throtle arm on injector pump was going all the way back to the stop. When I went to shut it down it kept running, I thought oh sh#t the turbo is leaking oil. I disengaged clutch and put a piece of wood in to stop drum and then stalled motor with clutch. Engine oil isnt low and turbo and intake are both dry. So whats the problem:roll?????