water where? engine or lower part.  If engine:
leaking cylinderhead gasket due to overheating,
water flown back from wrong storage of careless flushing of cooling system or the engine has been under water.
replace engine oil, check the sparkplugs with ohmmeter and on sparks, get the engine  running and see what happens and see what happens
                
 Wim
                
 July 2009