The noise you described is similar to what I had when my car was 102K old. I have a 1998 4cyl. Accord EX too. There was a roaring sound that seems to come from under but no visible leaks or holes underneath.
I have wasted hundreds of of dollar in dealership shops until a friendly mechanic finally diagnosed and fixed it. It was the bearing and hub assembly of my right front wheel. The unacceptable clearance of approximately 1/16" was causing the loud rumbling sound. The mechanic suggested replacing the axle too but I did not go for it.
My previous internet readings reveals that this is common for Honda accords with more than 100K mileage.
Wednesday, October 15th, 2008 AT 10:11 PM