Mazdaspeed626

whats goin on, i have a 1998 mazda 626lx I4 Dohc, Im fixing my car up a lil bit a lil project,, I am getting a slight misfire only on acceleration or reving it up only 1 or 2 misfires occuer eveery so often not all the time
i took it to mazda and they said it could be a little bit of water in my fuel system , ok i have learned to ignor it for now ,, any ideas how to remove it with out using "Dry Gas"?? I dont think its my valves cuz of the cams that i put on, (MazdaSpeed inlet and and exhaust) or my oil breather. I need some advise ,, o yea no check engine light or sign of bad relay, I have changed spark plugs, and wires so it cant be them i even tested them a few days ago so ya..