The crankcase ventilation system can be tricky to keep an eye on in your car because you might not notice the problems until they become severe. However, your car’s crankcase ventilation system performs a vital job by rerouting gases that escape the piston rings during combustion back into the intake manifold. Therefore, you should keep your eyes open for these four signs of crankcase ventilation problems in your car.
Oil Leaks
Oil leaks are one of the most common problems associated with a failing crankcase ventilation system. This occurs when the ventilation system filter becomes clogged, and gases cannot effectively escape the crankcase, raising the pressure inside. If this pressure becomes too high, seals and gaskets can fail, resulting in oil leaks. While several factors can cause oil leaks, they are always an indication of a severe problem and should be diagnosed by a professional.
Unusual Idling
Another common symptom of a failing crankcase ventilation system is if your car’s engine is idling faster than usual. This occurs when a vacuum leak occurs due to a clogged ventilation filter that can occur over time resulting in a vacuum leak.
Decrease in Engine Performance
When the engine’s crankcase ventilation system becomes clogged, and vacuum leaks occur, the fuel/air ratio will not be correct, resulting in a poorly performing engine. Typically the engine will lack power and will not accelerate as usual. In addition, you may notice that the engine vibrates for than expected, especially at low speeds. In addition, fuel economy will suffer if your car has a vacuum leak associated with crankcase ventilation failure.
Check Engine Light
Finally, you may notice an active check engine light. The Engine Control Unit (ECU) may give an error code if the O2 sensors indicate poor fuel/air mixture. While several issues can cause the check engine light to come on, it is essential to get it diagnosed before engine damage occurs.
Your car’s crankcase ventilation system is crucial because it prevents gases from building up in the crankcase, ultimately leading to other mechanical issues and even engine damage. Fortunately, crankcase ventilation system problems are usually resolved by changing the filter. Typically this is a relatively simple repair that your mechanic can handle without any trouble. However, crankcase ventilation failure can ultimately result in costly engine damage if it’s ignored for too long.
If you notice any signs of a failing crankcase ventilation system, see your auto care professional today before the problem worsens.
