My 1999 accord quality and reliability is so bad that I am convinced Honda is misleading the customers on their claim on reliability. Through this review, I would like to point out a flaw, either in the design or the manufacturing process, of the 1999 model year Honda Accord engine. The cylinder #3 valve melted out and blew a hole in it while driving on the highway. The mileage on the car was only about 105K. Honda dealers, and Honda H.Q. refused to honor any claims since the mileage is over 80K.
I've never, ever heard of this happening before with the 2.3 engine. The only thing I can think of is that the valve adjustment was never made (it's part of general maitenence) leading to carbon deposits and an over heating valve, but that's a stretch. Or maybe your timing belt broke and the valve hit the piston??