Quote Originally Posted by Innoko
May kaibigan akong nag stall yung civic nya sa Buendia due to floods. Ang ginawa nya, pilit pinastart yung engine while still in deep waters. Resulta? Overhaul yung engine nya...So i suppose ang problema ay hindi yung umaandar ang engine habang nasa baha kundi yung i-start uli pag namatay. The theory is papasok yung tubig sa muffler kasi the heat of the engine causes vacuum effect. Hihigop talaga yun. Try a to insert a lighted match sa isang empty bottle and cover it immediately, hihigop yun dahil sa flames that burns out the oxygen.
I'd say your example is of another case, since the engine has moving pistons, and it actually displaces the exhaust gases. So, there is actually much higher pressure iside the exhaust ports of the cylinder head, comparing it to atmospheric pressure... No way that water can enter...

Paano pa kaya pag turbo? The turbine fins simply cannot spin backwards while there is pressure on the manifold spinning it....

Yung sa friend mo, di sa exhaust, but sa intake pumasok ang flood water.... and that caused the hydrolock....