Saab 9000 (1984 - 1998)
2.3 16v auto. with red ign. unit.
Symptom:- occasionaly get missfire ( I think ).Seems to occur after slowing, say when entering roundabout, then, as accelerating get hesitation like.....dit, dit, dit, dit before smooth pickup.
When I removed ign. unit recently to check plugs I found some oil...