This video shows you how to test the AOS (Air Oil Separator) in your Porsche 986/987 and other models to see if it needs replacing. You don’t have to just assume it’s bad anymore!
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LN Engineering article: https://lnengineering.com/products/aos.html
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I am a Do It Yourself, also known as DIY, mechanic. I am NOT a professional mechanic. I do not have any formal training in the automotive field.
Help Me DIY assumes no liability for anything you choose to do to your car, before, or after watching one of my videos or utilizing the content from this web site.
All DIY repairs or modifications you perform to your car are made at your own risk. Sometimes, even if you’ve done everything the right way, you can destroy or damage one or more things on your car. You must understand this, but by leveraging knowledge and patience, the probability of encountering one or more problems can be reduced.
Also, if for some unfortunate reason, I do give incorrect instructions and something breaks because you followed my instructions, I will NOT reimburse or pay in any way for whatever cost that may be incurred due to following my wrong instructions.
Lastly, please don’t do anything to your car unless you yourself feel comfortable and confident in doing so.
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Another great Porsche video. Thank you.
Replaced the AOS on the 986 a couple weeks ago, even though it had been done by the previous owner just a couple years ago. Once I got into it, I notice the lower bellows weren't seated. At that point I already had the topside disconnected so I put the new one in, but I suspect the old one was still ok. I wasn't getting a ton of smoke, but the motor was damp around the secondary oil pump and burning off on the new Fabspeed exhaust. Unfortunately I had already replaced the o-ring on that oil pump over the winter too, but oh well. And now that all this is done…I just found a 987.2! I'm going to fly down south on Friday to pick it up and drive back to Chicago. S model with PDK (had a slight preference for manual), Sport Chrono Plus, and a secret under the back–a Capristo exhaust. ๐
Good stuff. Does a 986.2 Boxster S use spark tubes?
Every time you post a video whatever itโs on breaks, starter is going out on my 986 and you just posted a video, now I need new coils and plugs and boom you posted the video. Guess who now has alittle white smoke on startup
This almost needs to be the type of tool you rent out to people for $25 shipped with the cap for your specific vehicle. While I want to do this, $70-$80 for a tool I'd use once, maybe twice, makes me shy away from it. Maybe I can take up some HVAC work or try to balance/sync carbs on a bike/car one day. Great video!
Stacked cars – low key (awesome) flex