jumper5836

anyone know what this leak is from?

Airrik

not sure maybe a air conditioning hose I can't tell

Dharn55

It may be the seal on the cam position sensors.

rb101

That's one of the breather lines from the AOS. Mine was leaking a some oil from there when the AOS was bad.

Rick
99 996C4
87 944S

redridge

might wanna check the AOS side as well....

jumper5836

Did you also have extreme oil consumption?

I did the AOS check of taking off the oil cap and the engine seemed to run fine after a second of initial rpm changing with it off, there was a little suction but not to much.

ivangene

+1 for an AOS tube IIRC -

AOS failures cause differant symtoms on differant cars for some reason. Oil consumtion is one thing it can lead too as well as noises, white smoke, small leaks, poor running or nearly any combo of these.

have you had yours changed? - Its a fun job !

jumper5836

havn't had it changed and it sure looks like a $$ job to get at it.

ivangene

I have heard some shops can do it in ~4 hours (for C2 6 speed) - it took me longer

it can be a good DIY if you have medium skill and some tools. Costs about $100/150 for the AOS.. you might need a new line or two

Graufuchs

Is there a writeup on how to do this?

rb101

I had no oil consumption that I could detect and I had very little idle change with the filler cap off. But when I did the 105K maintenance back in Dec, I replaced the AOS as my engine/trans was out. I later opened the AOS with a BMFH and there was a 1/2 inch split in the rubber diaphram. I have pictures I can post.

Rick
99 996C4
87 944S

Pac996

PICTURES !!!! did somebody say pictures?

rb101

yeah pictures....

You can see in the bottom 2 pictures the small split in the diaphragm.

Rick
99 996C4
87 944S

himself

IMS?? lol.

-td