A positive crankcase ventilation valve, more often known as a PCV valve, allows the evacuation of gas from the crankcase of an engine. It is vital that this piece works properly and efficiently because a bad PCV valve can impact on the overall performance of your car. A bad valve will likely show signs that it needs replacement or repair. You just have to know what to check for.
SEE ALSO:WHAT IS THE DUTY OF PCV VALVE
1. FILTER CONTAMINATION
A faulty valve can create pressure buildup in the engine’s crankcase, pushing water vapor from a filter called a breather element. This filter is used to stop excessive oil. When the water becomes mixed with gas, it can leave deposits of oil and hydrocarbons on the air filter, leading to excessive fuel consumption.
2. OIL LEAKS
A bad valve is usually linked with excessive oil consumption and leakage. The PCV valve relieves pressure when functioning correctly, but when it fails, the pressure in the crankcase might increase, moving the oil out through gaskets and seals.
3. DECREASED PERFORMANCE
Since the PCV valves play a vital role in the car, a faulty valve might affect the overall performance of the vehicle. A bad PCV valve that doesn’t close properly might let the entrance of oxygen into the combustion chamber, which leads to dilution of fuel and air, creating the buildup of pressure in the exhaust. This could cause the engine’s performance to suffer, or it could even cause the engine to stall out.