My '84 Camry 2.0 Liter started smoking yesterday after idling for
10-15 minutes. I recently had an inexpensive cataltic converter installed. The engine doesn't smoke while cruising but only after idling. I can make it happen every time. I may have heard a "crack" from the area of the converetr about the time the smoking began. The smoke appears to white rather than blue. Any thoughts? Thank you.