Hey guys new here looking for some help. I own a 2001 S2000 mostly stock and the other day we had a bad rain storm the car was flooded. After the water went away the car started right up and drove around. The car sat for a few weeks now the car still starts but the car won't go into gear. Only when the car isn't running. Any idea any help would be great full.

And i did flush the clutch all ready.

 

If its full of fluid, jack the car up, support it properly and have someone press the clutch while you observe the slave cylinder. Make sure the clutch hydraulics are working and pressing in the clutch fork.