So just recently I'm encountering a problem with my 01 S4. One morning I started my car and excessive smoke was coming out the tailpipes. It sort of had a whitish/bluish/purplish color to it. And the car stunk, not exactly like burning oil either. Normally my tailpipes collect water at the ends, but now its pooling up. And the water is sort of slimey feeling, but still clear.

No CEL, but ran for codes using a VAG tool and got 8 codes.

P1455 - exhaust gas temp sens. 1 range/performance
P1459 - exhaust gas temp sens. 2 range/performance
(these two aren't new, I've been wrestling with them for 2 years now)

P0562 - system voltage, low voltage
(recently had a tensioner pulley break on me and caused no alternator, fixed though)

P0441 - evap emission control system incorrect purge flow
P0300 - Random/multiple cylinder misfire detected
P0306 - Cyl. 6 misfire detected
P0421 - 16805 /Literature

I cleared codes and started the car again...no codes! raised the RPMs and still no codes. Makes me think there was just random misfire and nothing big.......

However, I checked my oil cap, just a hunch, and I've got the dreaded milky white on the cap.

So what the hell is wrong with my car...first I was thinking turbos because of the exhaust. But now I'm thinking headgasket.

 

your turbos could still be leaking coolant into the oil, thats an interesting on though, are you still on stock turbos?

 

Yep, stock turbos. They've got 170,xxx miles on em. No chip or mods other than straight exhaust. And I always took care of them. But that is a lot of miles. I'm guessin' maybe turbos. but I'm gonna have to compression test I guess.

 

170k on stock turbos?
They've definitely done their part.
Sounds like it's time to give them the proper burial.

 

Yea, they've had a good run! but just an update on my ordeal...I compression tested the cylinders and had similar psi's in every cylinder. Anywhere from 160-170psi. Its lookin' more and more like I've got failed turbos. The gasket that separates the oil and coolant must have leaked causing coolant to get into the motor oil. RP K04s here I come! I'm not going full stage 3 though. Just turbos, new oil lines, piping, and K04 tune. It'll be a lot more fun afterwards though...never rode in a chipped S4.