If water is sucked into the engine, you have misunderstood some part of the installation. Please reread the books, or watch the building and installation DVD's, and look up any word you don't fully understand in our Glossary or a good dictionary.
Water should NEVER be sucked into the engine, unless you are off-roading, in which case, you should have a separate bubbler jar in the output hose, to catch the excess water; read more.