Classic Saab 9-5 (1997 - 2009)
My friend recently decided he wanted to try to get his car (2001 Saab SE; V6 petrol, 230k KMs) working normal again after it sat for a year without running once.
We went over, dropped a battery in it, and it started instantly, one roll. Ran perfect, no rough idle, etc.
So, the problem:
Smoked...