I’d appreciate any input on the following (SR20):
My autopilot (55X) all of a sudden is off 10 degrees in heading mode. Don’t know why.
Plane sputters upon starting. Problem started after I had “easier cold weather starting” modification on engine. What’s the best procedure for cold and hot start, with respect to priming, boost, and amount of throttle?
Having blackish soot from left exhaust pipe back to past luggage door - bottom and up slightly on side. Related to #2 above?