One problem related to engine clicking and tapping noises has been reported for the 2000 Buick Century. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Buick Century based on all problems reported for the 2000 Century.
Whenever vehicle was cold started, there would be a tapping noise. Have taken vehicle to dealership twice. Had factory representative down & was informed that problem was normal. Also, mechanic tested other vehicles on a cold start, and here was no tapping noise coming from engine. Tapping sound in the engine has increased in loudness and duration on cold starts. The dealer installed a synthetic oil and fram oil filters.