West Hills’s Trusted Porsche Repair Shop for Air-Oil Separator Issues

The air-oil separator is an integral part of the crankcase ventilation system in your Porsche’s engine, and its primary function is to filter oil from air within the engine. When your engine is running, the combustion process allows for pressure buildup, which is often released in the form of vapor (a mixture of oil and air).

The air-oil separator is used to extract oil from the air and return clean air to the intake, while the oil is returned to the engine. This helps reduce emissions, enhances performance, and also ensures that oil remains in the engine rather than being drawn into the intake or exhaust system. As a Porsche driver, it’s beneficial to know some of the signs that indicate your AOS is failing, as well as where to take your vehicle for repair.

Common Signs of Porsche Air-Oil Separator Failure

• Exhaust Smoke: This is usually the first sign that drivers notice when AOS fails. A failing AOS allows oil vapor into the intake system, and when the oil is burned with fuel, it results in thick smoke from the tailpipe.
• Burning Oil Smell: Occasionally, you may detect a burning oil smell even when there is no unusual smoke. A burning smell is most noticeable after driving for a long time or when the car is idling, and it is an indication that oil is getting to the wrong place.
• Oil Leaks: When the AOS fails, the engine may experience excessive pressure buildup, which pushes oil out through the seals and gaskets. If you notice oil stains on the ground beneath your Porsche or see black, sticky deposits around the engine compartment, it could be due to a faulty AOS.
• Check Engine Light: A faulty AOS can cause issues such as misfires or increased emissions. If your check light is on and you are experiencing any of the above issues, then it’s time to take the AOS in for a check.

How To Address A Failing AOS

To confirm if the AOS is truly faulty, a mechanic will first inspect the intake system for oil and also examine the separator for any signs of leakage or cracks. Another test that might be performed is a smoke test to check for vacuum leaks. Sometimes, an AOS failure may exhibit symptoms similar to those of a faulty PCV valve; therefore, it is essential to conduct a detailed inspection.

If the symptoms and diagnosis indicate that the separator is faulty, it will need to be replaced. The location of the AOS is often hidden and may vary depending on the model of your Porsche. It may be located behind the intake manifold or deep within the engine compartment and may require some disassembly before you can access it.

The old separator is removed and replaced with a new, OEM-quality one. Your mechanic may need to inspect the hoses and surrounding parts for signs of oil and replace them if necessary. After all the components are reassembled, the system is checked for leaks and functionality. There should be no more smoke, hesitation, or any unexplained loss of oil, and your vehicle should run smoothly.

Bavarian Workshop Is The Go-to Shop For Porsche Air-oil Separator Solutions

At Bavarian Workshop, we understand the importance you place on your Porsche, and our experts are dedicated to ensuring it performs at its best. Our technicians have years of experience working on German imports, and we understand the symptoms and remedies of Porsche problems such as air-oil separator failure. Whether you’re driving a 911, Cayenne, Panamera, Macan, or any other Porsche model, we’re here to offer accurate diagnosis, the best repair services, and high-quality work that meets your car’s needs.

We are located in West Hills, CA, and our primary mission is to offer dealership-quality services at an affordable rate to our clients. If you feel that your Porsche is not performing as it used to, or if you have an idle problem or any other engine issue, bring it to us. We are dedicated to ensuring that Porsche owners are safe and secure and can drive their vehicles without encountering malfunctions. Book an appointment with us today and have your Porsche’s performance brought back to life.

* Porsche 911 GT3 RS Car image credit goes to: emre cabuk.