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Service bulletin on 2011 Honda Accord: need to open engine
So I did some research and found that doing such service means open the engine and do the replacement. It gave me some bad feeling when I thought my new car actually has experienced such repairement. It also gave me some concern since this engine opening was done at the dealer instead of at the factory, although I told myself that all the technicians are equally qualified.
So I would suggest that new buyers take a close look at your car's service history at the dealer and decide whether you still want that car or do more negotiation. My car was delivered to the dealer in Nov. 2010, so I guess other cars with similar delivery time may also have such problem.