We will look for an answer to the question of what is the crankcase ventilation filter (CCV) in some cars and what it does. Also what are the symptoms of crankcase ventilation filter failure? In short, we will look at all the curiosities about CCV.
The crankcase ventilation filter, short for CCV, is a system used to reduce the pressure in the engine of some cars. CCV is commonly found in vehicles with older models of large displacement engines, motor vehicles such as race cars and motorcycles. It is even found in some diesel-powered vehicles. In this article we will make a detailed review about the crankcase ventilation filter.
What Does a Crankcase Ventilation Filter (CCV) Do?
The principle of operation of internal combustion engines is the logic of compression. The implosion of the air fuel mixture that forms inside creates a pressure and causes the pistons to be pushed down. This pressure (compression) must be maintained. That is why in the piston circles there are sealing rings called rings. But in older engines, this tightness never goes down to zero, and some pressure passes towards the crankcase. There is a crankcase ventilation system to prevent this pressure from bursting the gasket in the sump. In addition, foreign substances are found in this leaking pressurized gas. Because as a result of combustion, carbon molecules emerge and combine as a result of the reaction. This is where they are filtered by the crankcase ventilation (CCV) filter to prevent damage to the engine mixed into the oil.
The location of the sump ventilation filter (CCV) is located above the top shut-off in the engine block. There is a hose that comes into this filter, and the gas coming out of the sump is passed through the filter and then returned to the combustion chamber. Because this gas contains unburned fuel and can be reused. This causes your vehicle’s fuel consumption to decrease. In short, it is a very useful system.
Clogged Crankcase Ventilation Filter (CCV) Failure Symptoms
Since CCV is a filter, like all filters, it will fill up and clog over time. Therefore, the CCV needs to be cleaned occasionally. But if you forget and it becomes clogged, it will give the following symptoms.
1- Idle Surge
A clogged sump ventilation filter will directly affect your vehicle’s idle speed. When there is a blockage in the filter, it usually causes the idle to be high. This is due to the fact that the engine oil is forced to reach the engine due to pressure and passes to the crankcase ventilation.
2- Oil Leaking Over the Engine
The sump ventilation valve (CCV) retains engine oil molecules while filtering out the gas. If this deposit becomes no longer retainable as a result of clogging, you will notice oil leaking from the top of the engine.
3- Decrease in Engine Performance
If you have been feeling a loss of power in the engine recently and there are two symptoms mentioned above, your vehicle’s crankcase ventilation filter may be clogged. Because the air/fuel mixture ratio that should be in the engine will be broken.
4- Engine Stuttering and Rich Mixing
Since the filter is clogged, the air ratio of the engine will change. Although the fuel comes at a normal level, the engine of your vehicle will work with a rich mixture because the air rate deteriorates. As a result, when you gas, you will see that there is a misfire and black smoke coming out of the exhaust.