Start with checking the spark plug\wires. The distributer\rotor or coil could also be going bad. I cant remember if a 94 still used the distributer\rotor set up or it went to the coil setup. Another thing is to make sure the fuel filter is clean. Replace it if in doubt. Well that's a couple things to check.
No
A sparkplug misfiring.
because itt needs to be work on
Water will cause your engine to sputter and lose power within a few miles after getting into your tank. A can of Dry Gas or other like product will remove the water after you drive a few miles.
Yes it can.
A 1993 Ford Aerostar would have come from the factory with ( 5W-30 )
That would be 21 gallons.
If you did it every day it would be exactly 5,840 miles.
Incorrect ignition timing or damaged valves would make a 95 Honda Odyssey sputter and backfire. Backfires are directly caused when ignition occurs at the wrong time.
lack of fuel
have you ever changed the fuel filter ?
ice in the fuel system