A small amount of water can be condensation, however, if it smells like or contains anti-freeze, you have a major engine problem - possibly a cracked engine block which allows the coolant to seep into the crankcase.
It could also be a blown "head gasket" which is a less serious problem, but still a large job to fix. This too could allow coolant to leak into the crankcase in some cars.
condentsation
if its water cooled head gasket=(
Too much oil in the crankcase will cause the oil to slosh up into the firing chamber and foul up the spark plugs.
The crankcase ventilation tube is plugged, pinched or it has been eliminated.
The positive crankcase ventilation or PCV system uses engine vacuum to draw crankcase vapors into the intake where they are directed into the combustion chamber and burned. This keeps pressure from developing in the crankcase which could otherwise cause gaskets and seals to leak. It also reduces sludge build up by drawing out water vapor. Once the engine reaches 212 degrees Fahrenheit (100 degrees Celsius) water in the oil turns to steam and is extracted with the other engine vapors.
There are several things that can cause diesel fuel to get into your crankcase. A broken piston ring is the most common cause.
No, but your crankcase should be vented anyway. If your getting coolant in the crankcase it is getting in from a bad head gasket or cracked head or bad intake manifold gaskets. If you don't fix it soon your engine will be toast.
No, less than 1 pint will do no harm.
the mechanical seal on the water pump is out
antifreeze (Water) pouring down the front of the engine is from the water pump.
If it is still getting water in the cylinder then it could be coming from the bottom / below the piston. Typically the seal on the water pump will leak allowing water to get into the crankcase. If it gets too much it will get on the cylinder walls and smoke.
to much oil in the crankcase is the #1 cause.