So, I recently purchased my first Porsche ... a 1999 911 Carrera 4 coupe. I had previously driven my uncles '03 turbo and decided I wanted one. My plan is to use it as a daily driver as much as possible here in the northeast so it will replace my '91 BMW 850i which I've had for the last 6 years and 45k miles.

The 996 is a 6-speed with 94k miles in silver with blue interior. It drives extremely well and was a bargain in my book at $15k.

It will join the other cars in my garage which include: '91 Dinan 8 (twin turbo v12), '88 Corvette coupe (406cid v8), '90 B2K Callaway Aerobody (twin turbo v8), and the '90 Corvette vert (supercharged 396cid v8 / NOS / cage / etc).

I have a lift and workshop so I try to do all of the work on the cars myself and the Porsche will be no exception.

So... I have my first issue which needs attention and I was looking for a little guidance from the experienced owners here. I took it out yesterday and drove it fairly hard... nothing stupid, but harder then I would drive it normally. Anyway, I smelled some oil burning which of course scared me a bit.

It turns out that there was an oil leak that was dripping on the drivers side header. Up on the lift, I was able to see where the oil was coming from. After some research (https://sites.google.com/site/mikefo...torreplacement) it appears that the oil is coming from the AOS bellows. I was thinking about just replacing the bellows and using newer style screw type clamps.

Why not replace the entire AOS? Well, the previous owner had it done a few years ago. Secondly, the link states that its probably functioning correctly if I could pull the oil cap off easily with the engine running... which I was able to do.

So, does anyone have any recommendations?

Thanks,

-JRW

BTW- I'll try to get some pics this week!

 

My guess would be the spark plug tubes. The tubes themselves are either cracked or the O-rings are worn. I'd do all of them if that's the case.

 

+1 on the tubes, since they are right over the headers.

That being said, on a 12 year old engine, unless the POs have really kept up with things, there are likely going to be a lot of leaks to address.

 

Hey,

Thanks for the replies. I might not have been totally clear... I am pretty sure that the oil is leaving the engine around the bellows of the AOS. The rest of the engine and engine compartment is completely dry.

So, I think I going to start there and was wondering is I can buy just the bellows and if anyone has replaced just this part of the AOS before. It looks like I should be able to get my hand up there to remove the clamps and bellows ok but, this is my first time working on this engine and I could be wrong.

Thanks again,

-JRW

 

I've heard accessing some parts of the engine is easier when the wheels are removed.