The air-oil separator is responsible for removing oil from the engine ventilation system, ensuring the oil does not make its way through the intake system. There are times where your Porsche may experience issues with this separator and need repairs.
No matter the make or model Porsche you purchase, it will be equipped with a positive crank ventilation system. This system is designed to release built up gases from the crankcase and to collect any fuel, oil, and water from the crankcase and route it back to the combustion chamber. From there, it can be burned and cleaned in order to be safely expelled into the air.
There may be a light film of oil vapor left behind, which is where the air-oil separator comes into play. The air-oil separator is designed to catch the trace amounts of oil left behind before it makes its way into the intake system. It helps to prevent oil vapors from creating carbon deposits which would lead to more problems down the road. The air-oil separator has a drain connecting it to the oil pan so no oil caught is wasted.
Warning Signs of Failure
A failing air-oil separator will produce a few symptoms prior to complete failure. It is imperative that you do not ignore these warning signs and have your vehicle inspected by a Porsche professional immediately.
The air-oil separator is connected to the check engine light system. When this part malfunctions or begins to fail, the check engine light is illuminated. In order to receive an accurate diagnosis of the cause of the illuminated check engine light, a Porsche specialist will use factory grade equipment to diagnose the code that has been generated by the sensors.
An oil leak is another common symptom of a failed air-oil separator. If you see oil leaking or puddled underneath your Porsche, it is important to determine the cause of the leak. To do this, you will need to locate the source of the leak. If you are uncomfortable in doing so, a certified mechanic specializing in Porsche-manufactured vehicles can locate and diagnose the cause for you.
Lastly, dark smoke emitted from the exhaust system is a common warning sign of an air-oil separator failure. The dark smoke is caused by an unbalanced mixture of air and oil. The unbalanced mixture is usually created due to the failed air-oil separator. If your vehicle is emitting dark smoke, it is imperative to have it inspected as soon as possible.
Master Mechanics Auto Repair
At Master Mechanics Auto Repair, we have been helping drivers in Battle Creek, Portage, and Kalamazoo, MI, for more than 30 years. We are a 
full service repair auto shop for import and domestic makes and models, and we specialize in European vehicle service and repairs. We service vehicles such as Audi, BMW, Fiat, Jaguar, Land Rover, Mercedes, Mini, Porsche, Saab, Smart, Volkswagen, Volvo, and more.
Our team is composed of ASE-certified mechanics and expert technicians. Our mechanics perform all services and repairs and use the latest factory-grade tools and equipment to further ensure the quality of each visit.
Although we have had a recent name change to Master Mechanics Auto Repair, our shop has been helping drivers for more than 30 years. Our expert technicians and certified mechanics understand that each vehicle comes with a certain level of quality, which is why we provide all dealer services, maintenance, and repairs without the high price tag that comes with using a dealership.
If you find yourself in need of a tow, call Graham’s Towing and tell them you are being towed to Master Mechanics Auto Repair. They will get you taken care of quickly and efficiently. We only work with others who fully understand the high-quality and extreme attention to detail that it takes to work with luxury European vehicles.
We make it a mission to have your vehicle leave our auto repair shop looking and running in top condition. Should you find yourself in need of service or repairs, call Master Mechanics Auto Repair for fast and friendly service. We look forward to showing you why we are the #1 auto service center in the area. Call us today for a convenient appointment.