Thanks so much for this video, it gave me the confidence to tackle on my 2009 997.2 (same engine). I not only had oil in the plenum and on the seals like you showed on yours, but it was also dripping through those seals on to the top of the engine from the underside of the metal band, (just on LHS), it was a big mess and had clearly been doing it for a while, there are lots of 'pockets' on top of the engine to collect it all, so no oil had worked down to underside. I notice that the AOS has been through 3 or 4 iterations, and the latest one I fitted was slightly different even to the one you fitted, so clearly a 'weak part' under continuous improvement. I will re-check the plenum in a few months to confirm no oil.
@bobbygfl
2 жыл бұрын
Nice! Thanks for the comment!
@wwilliams1358
Жыл бұрын
This looks to be a PITA, especially since my hands are on the large size. I can see myself dropping the bolt or the ratchet/socket during removal. You mentioned you had to drop the motor a little, how did you do that? How much did you drop it? I may need to drop mine to get my paws back there without cutting myself on sharp edges. Great video, and my thumbs up just gave you 100!
@bobbygfl
Жыл бұрын
This was a total pain. I never would’ve done it if I did not have the motor dropped for the Plenum job.
@John-we7jx
3 жыл бұрын
Really good job and only one -f-bomb!
@bobbygfl
3 жыл бұрын
Lol. Only 1 on camera. Thanks for the comment!
@caseyscarsinc.7818
5 жыл бұрын
If you find oil in your intake tract it does not mean your AOS is failing or going to fail. This is normal. A failed or failing AOS will blow smoke out of the exhaust (after initial engine start)
@bobbygfl
5 жыл бұрын
Casey Jones thanks for the comment. Porsche service manual, service bulletin and the fact there was oil in the hose from the aos would dispute that. Also, pulled the throttle several months after replacing and there was zero oil in the plenum. So, I’m sticking with oil in the plenum is not normal.
@Jeff1035
6 жыл бұрын
Really nice video!! I have learned that I have some small amounts of coolant in my oil, after having it analyzed. I am having a second analysis done to be sure about the findings. However, I saw a few posts on Rennlist indicating that the AOS could also be a culprit of coolant in the oil. Your thoughts? Thanks again for a great great video! Jeff
@bobbygfl
6 жыл бұрын
Jeff1035 i do not see how that’s possible. There is no coolant that flows though the AOS. It’s literally a fancy screen in a box that allows oil to drain back into the motor while allowing air to vent the crankcase. That’s it. Nothing to do with the coolant system. The only thing I can think of is a bad head gasket. Good luck! Interested to know what the real answer is.
@michaelheuvelsland7572
5 жыл бұрын
How long did this job took you? Six hours? Didn't look that long though. Keep up the good work. I am saving for a 996, your videos help me giving me confidence to work on my own car.
@bobbygfl
4 ай бұрын
Thanks. Yes it took a long time 5-6 hours easily. But I’ve never done it before
@gratianmate4591
Жыл бұрын
Hi i have a 991 3.4 with 163000km i lose 1 l oil every 3000km tichi noise right side , exhaust is not clean, when is cold engine rpm goes a litle up than bach….i changed spark plugs all ..same esue… do you think this can be the esue
@bobbygfl
Жыл бұрын
Yes most likely.
@rumrunrjones8546
5 жыл бұрын
You spray T9 on your engine to clean? It does a good job and dosent attract dust and dirt?
@bobbygfl
5 жыл бұрын
Rumrunr Jones I spray T9 on the engine after it’s clean to protect metal from rust and all the plastic and rubber helping keep it soft and and from drying out and cracking. T9 dries to a waxy finish and does not remain wet like using a lubricant to protect your motor. It does not collect dust and grime like all wet lubricant would.
@Sams911
4 жыл бұрын
can you tell if your engine is susceptible to intake valve carbon buildup as a result of being Direct Injected? I worry about my new 992 engine building up carbon.. I use Techron Chevron gas and I do add BG44K every few tanks... anything else we can do? I know the oil spec also went from A40 to C40 which has less calcium additive that prevents LSPI and other issues...
@bobbygfl
4 жыл бұрын
SJ hi. Yes, good question. I did send a scope down each intake all the way to the valve. They were surprisingly clean. I have the factory spark plugs and I don’t really drive the car aggressively. I clean I mean there was some discoloration but no powdery or flaky deposits. I use zero additives. I only get my gas from Mobil and I use the premium.
@Sams911
4 жыл бұрын
@@bobbygfl thats good to hear... how many miles on your car when you looked in there?
@bobbygfl
4 жыл бұрын
SJ about 15k
@Sams911
4 жыл бұрын
@@bobbygfl have you tried to run any octane boost to get up to the ideal 94? I have 91 here in CA.. I bought some Boostane Professional and am adding 3oz to each tank... I can feel some difference.
@Sams911
4 жыл бұрын
btw, here is a video of my car: kzitem.info/news/bejne/smyCmZawmHpieoY
@Duschanio1
4 жыл бұрын
Did this fixed the Problem ? Have a 997.2 Turbo an have the Same Problem .
@bobbygfl
4 жыл бұрын
Stefan Duscher yes that says fix the problem 100%. About two or 3000 miles I put a scope down the Throttlebody. Nice and clean.
@nticbox
3 жыл бұрын
great job~
@bobbygfl
3 жыл бұрын
Thank you!
@rict1t2t34
3 жыл бұрын
I have a question. If the oil separator breaks, it leaks of the coolant? Thanks!
@bobbygfl
3 жыл бұрын
닉네임니마음에 안들면 강퇴냐? No. The air oil separator only has air and oil flowing through it. Basically the way it works is the air from the intake manifold flows through a screen which catches the Oil particles suspended within the air. The oil droplets build up on the screen and drip back into the oil reservoir basically. It simply prevents oil from building up in your air intake manifold. There’s no coolant involved.
@rict1t2t34
3 жыл бұрын
@@bobbygfl Thanks for replied.I think so.my 2001 Porsche 911 have leaking coolant.so I visited to local mechanic shop.they said "it's oil separator problem."that's why i'm very confusing .do you have any idiea?Thanks again~!!!
@bobbygfl
3 жыл бұрын
닉네임니마음에 안들면 강퇴냐? No idea. Sorry. There’s no coolant lines that go to it.
@Sinistr_SVT
4 жыл бұрын
What year is this Porsche 911?
@bobbygfl
4 жыл бұрын
Kyle Krempel 2013
@Dan-gj1ju
6 жыл бұрын
is this similar to 997? i have a 2009 Porsche c2s
@bobbygfl
6 жыл бұрын
Danny Hammoud yes. Almost the same motor.
@Dan-gj1ju
6 жыл бұрын
YOLOfotos Gonna try this on my coupe. Check engine light came on.. scanner is saying the engine is running lean. I have a feeling AOS is the culprit??.. is it necessary to drop the motor on a coupe?
@bobbygfl
6 жыл бұрын
Danny Hammoud yes you’d need to drop the motor. As long as it’s supported it’s really very easy. In my plenum video I show dropping it. If there’s oil in the vent line it’s a dead giveaway the separator is failing.
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