here's a mystery... my 2002 A4 was parked on a steep hill with engine facing downhill during cold weekend 1 mo ago (I live in PA so it wasn't freezing). When I went to start the car after it had not been driven for the weekend, the engine turned but would not catch. I towed it to the dealer who diagnosed the problem as 4 bad spark-plugs. OK, now, 1 mo later, I park my car on same hill and again have same problem, engine won't catch in the morning. any clue what this could be?

 

First thing is, DON"T PARK THERE ANYMORE!!!

If changing the pulgs fixed the problem, then remove, inspect, clean or replace plugs.

 

it could be a case of the fuel not up to the pump due to it being parked on a hill and when you toed it to the dealer the fuel got to the injectors because the car was on level ground, just a wild thought