I have a full tank vehicle was idling real hard found out there water in my tank what should I do got a mazda demio 2003

Depends on just how much water is in the tank. For small amounts try this How to Get Rid of Water in Gas | eHow.com (http://www.ehow.com/how_7636494_rid-water-gas.html) Large amounts , have someone drain your tank from under the tank, not safe for a DIYer