Some form of pressure is needed, either crankcase compression or super-charging.
From the en.wikipedia.org
If it's no higher than normal, chances are water has not entered the crankcase.
From the wheels.blogs.nytimes.com
They came up with two racing car engines built on a common crankcase and camshaft.
From the en.wikipedia.org
Carnival said a crankcase split on one of the ship's six diesel engines, causing the fire.
From the post-gazette.com
This flush chemical is put in the engine crankcase a few minutes prior to the oil change.
From the washingtontimes.com
The filters cut diesel emissions, and the crankcase systems purify air inside the buses.
From the post-gazette.com
The intake manifold, crankcase ventilation hose and drain hose may need to be replaced.
From the nytimes.com
Cast-iron detachable cylinder head and aluminium-alloy crankcase.
From the telegraph.co.uk
Crankcase ventilation systems reduce emissions from the crankcase into the engine compartment.
From the courier-journal.com
More examples
Housing for a crankshaft
In an internal combustion engine, the crankcase is the housing for the crankshaft. The enclosure forms the largest cavity in the engine and is located below the cylinder block.
Crankcase is a fictional character from the toyline, comic books and cartoon series of the 1980s. He is the G.I. Joe team's A.W.E. Striker driver and debuted in 1985.
Crankcase is the name of several fictional characters in the various Transformers universes.
A shaft with one or more cranks, or "throws," that are coupled by connecting rods to the engine's pistons. The combustion process creates reciprocating motion in the rods and pistons which in turn is converted to a rotating motion by the crankshaft.
Main block of engine which houses the crankshaft and often the cylinder liners. The block may be cast or fabricated. Fabricated crankcases are more expensive to manufacture but are lighter and stronger.
The casing enclosing the crankshaft and its attachments.