Why is my Porsche Boxster smoking?
The most likely cause of the smoke is failure of the air-oil separator – a device designed to reduce the Porsche Boxster’s emissions. This can result in oil being sucked into the intake manifold, causing damage to spark plugs and the catalytic convertors.
Why do Porsches smoke on startup?
When you have a faulty AOS, it is not removing all of the oil vapor and, as a result, leaves oil on the intake walls. When the engine is shut off, this oil runs down into a cylinder and smokes upon the next engine start.
Why does white smoke come out of my exhaust when I accelerate?
Transmission Fluid. When you detect white smoke from the exhaust when accelerating or even during start-up and warm-up, this indicates that your vehicle’s engine is absorbing too much transmission fluid from the vacuum hose or line, resulting in burning oil and a noticeable burnt smell.
What is an AOS on a Porsche?
The AOS, or air oil separator, is a part of the PCV system on a modern Porsche sports car engine found in Boxster, Cayman, and 911 models.
Does white smoke always mean head gasket?
White smoke from your exhaust almost always indicates a blown head gasket, and just like there is coolant mixed with your engine oil, there will also be engine oil mixed with your coolant.
How much white smoke from exhaust is normal?
The smoke should only be coming out in small amounts after you start your engine. Then after about 30 seconds to a minute, the white smoke should clear up. If this is the case then you have nothing to worry about.
How long does a Porsche AOS last?
The AOS should be treated as a maintenance item and replaced using only Genuine Porsche parts, including all AOS vent hoses and lines, every 6 years or 75,000 miles, whichever comes first.
What happens when an air-oil separator fails?
When the air-oil separator fails, the results are not catastrophic, but if left untreated for a while, it can result in damage to the engine. If the air-oil separator is not working properly, it cannot separate the oil from the “air” that it is sucking back to be combusted, and oil is pulled into the intake manifold.
What color should my exhaust smoke be?
It is considered normal when the exhaust coming from your vehicle is light or thin white. This type of smoke is usually just water vapor. You will notice it when you first start your vehicle, especially on cold days. The reason for this form of exhaust is that condensation collects naturally in the exhaust system.
Is white smoke always a head gasket?
What happens when an air oil separator fails?
How to test a Boxster for a leak?
In the case of the Boxster, I removed the intake air filter and used a cone adapter that comes with the machine to seal the smoke hose to the intake pipe. The car should be completely cold when you are testing it for leaks, as the rubber hoses and boots are most likely to leak when they are cold and contracted.
What kind of vacuum system does a Boxster have?
There are two primary vacuum systems on the Boxster engine: crankcase vacuum and intake manifold vacuum. You can test for proper crankcase vacuum by removing the oil cap while the car is idling.
What can you test with a smoke machine?
You can use the system to check climate control systems, leaky headlamp housings, exhaust systems, A/C lines and compressors (although most A/C leaks are very small and difficult to detect with just a smoke machine). You can also bench test components like radiators prior to installation to make sure that they are factory perfect.