What to know about the Vent Oil Separator:
An internal combustion engine operates on a series of controlled explosions. During this process, gases are created. While most of those gases will eventually make their way from the combustion chamber through the exhaust manifold and out the muffler, some pass the pistons into the crankcase. The latter is called “blow-by”, and it can be very rampaging to an engine. It makes additional pressure within the crankcase that damages seals and gaskets. To combat this deleterious effect, a ventilation system is used.
These systems require several different parts in order to work, including the positive crankcase ventilation (PCV) valve and the vent oil separator hose. The vent oil separator hose is in charge for capturing and collecting oil droplets that invariably accompany those spent gases and ensuring they are not released into the combustion chamber. The gases are then re-burned for emissions control. If your vent oil separator is plugged, excess pressure can build up inside the crankcase and blow out a seal, causing an oil leak. Excess oil in the vent oil separator can also enter the combustion chamber, causing a misfire and rough run with blue, oily exhaust.
Facts to Note:
The vent oil separator hose is susceptible to clogging, particularly during cold weather.
The vent oil separator hose is part of the crankcase ventilation system. If you’re experiencing related problems, have the entire system diagnosed.
How to Fix:
The faulty vent oil separator is situated and identified
The intake is removed and the vent oil separator is removed
The new vent oil separator is fixed and the intake is installed
The engine is started and idled, and then the new vent oil separator is checked for leaks
The vehicle is road tested and checked for proper operation
The vent oil separator doesn’t have a set maintenance schedule. If you are having symptoms related to the vent oil separator, have one of your expert mechanics analyze the crankcase ventilation system on your vehicle and repair it as necessary.
Common symptoms indicating you may need to change the Vent Oil Separator:
Oil is present in the PCV valve
Blue smoke from the exhaust
Engine works rough with a check engine light on
Importance of this service:
The crankcase ventilation system is an essential part of your emissions control system and can adversely affect engine operation if it is not maintained correctly.