'92 Buick Century 3.3, 160K, has the classic symptom of bad plugwires, missing under load. Tthe wires appear old anyway, if not original, and I was going to replace them and check the plugs. However, the miss under load is MUCH worse when the engine is cold, and it has to run a good 5 minutes before it improves enough to become merely annoying. However, in addition, the idle when cold is very rough, smoothing out after 5 minutes or so.
Question: I was wondering if the fact that the problem being much worse WHEN COLD points to something in addition to -- or other than -- plugwires? I wouldn't expect plugwires to affect cold idle.
No check engine light. Haven't gotten around to checking it for history codes, or much of anything else, since I hit a deer right after I got the car (work car) and had to deal with that first.