2003 Honda acceleration issue

I'm thinking of buying a 2003 Civic. It takes a moment after I hit the gas to start accelerating. Once it's going, it's fine. What might it be? Not a Honda guy, but I can fix it once I know where to start.

Has had the plugs replaced not too long ago. The vehicle has 125k on it, but has been maintained pretty well. Any help would be appreciated.

Read more: 2003 Honda acceleration issue