The gases released may contain some debris, oil particles, and other contaminants, requiring the need for the crankcase breather filter. You can opt to release the pressure through the PCV positive crankcase ventilation valve or the crankcase ventilation filter, and in this scenario, the focus is on releasing excess gas pressure using the crankcase ventilation filter. Typically, there is no difference in the working of the CCV filter and other types of filters in the car engine.
This filter removes oil particles and other debris in the gases while releasing excess pressure on the environment. Also, this crankcase breather filter prevents dirt from getting into the crankcase, particularly during the engine cooling process, and helps to keep your crankcase clean. Ultimately, the crankcase breather prevents oil contamination, which can have far-reaching adverse impacts on your engine.
The CCV filter usually sits on top of the valve cover or you will find it on the breather hose that is on top of the crankcase connected to the air intake.
This section of the engine is where positive pressure is released, and air intake to and from the atmosphere takes place. As noted above, the crankcase breather filter plays a crucial in the proper running of your engine system. Like other parts in a car, it requires regular servicing or replacement, as the debris from internal or external contaminants can quickly clog or block it.
Your vehicle will alert you when there is an issue on your crankcase breather filter by displaying any of the following three symptoms.
When there is clogging on the filter, it can lead to a high idling speed. The primary role of the filter is to prevent the entry of debris and other contaminants into the engine while easing pressure from the engine. When the filter blocks, there is a high chance of a pressure building up, and this high pressure can lead to the gasket and seals blowing up.
You may particularly notice this issue when driving at low speeds. However, there are quite a few other components that affect engine performance. If you notice engine oil coming out from your crankcase breather filter, you may need to check your seals. Worn out seals can lead to an oil blowback in the inlet valves, which in turn leads to a pressure build-up that pushes oil back to the inlet filter.
The excess oil then pushes out through the crankcase breather filter. Also, this condition can occur due to increased crankcase pressure, which causes oil to leak beyond the oil catch can, gaskets, and seals. This CCV filter subsequently blows out this engine oil. Best places to order parts? If the filter becomes clogged and causes any vacuum leaks, this may cause a decrease in engine performance due to the disturbance in the air-fuel ratio. The vehicle may experience a decrease in power and acceleration , especially at low engine speeds.
These symptoms can also be caused by a variety of other problems as well, so having the vehicle properly diagnosed is highly recommended. The crankcase filter is one of the few components of the crankcase ventilation system, and is therefore important in maintaining full functionality of the system. For this reason, if you suspect that your crankcase vent filter may be having an issue, have the vehicle serviced by a professional technician, such as one from YourMechanic.
They will be able to replace your failing crankcase vent filter and perform any services that may be required for the vehicle. This article originally appeared on YourMechanic. Autoblog is partnering with YourMechanic to bring many of the repair and maintenance services you need right to you.
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Thanks for that. And thanks for reading Autoblog. Oil leaks Oil leaks are one of the symptoms most commonly associated with a bad crankcase vent filter. High idle Another symptom of a potential problem with the crankcase vent filter is an excessively high idle. Decrease in engine performance A decrease in engine performance is another symptom of a potential problem with the crankcase vent filter.
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