every time it rains i get water in my fuel to the point the truck will not start . . . the truck's a 2000 tundra 4x4 4.7L with 245,000 miles . . . here's what i've done so far . . . background, the truck starts just fine on starter fluid and runs ok until it's gone, which says the electrical and mechanical are ok . . . when this problem happens, i spend a half day draining the bad fuel out of the tank, and then it runs ok . . . i've put gas water treatment in and this sometimes gets the truck running, tho rough for a while, i've replaced the pressure regulator, fuel filter, filler cap, and 4 of the 8 injectors, fuel pump works fine . . . help!!!