MOBC200K

ok so yesterday i cleaned out my maf and i found oil in it wtf that can't be right is it. while i was at it i cleaned out the throttle body and i'm very happy with the throttle response and car is running much better but can anyone clear up about the oil thanks

krisv420

What type of air filters are you running?

Glyn M Ruck

K&N ????

MOBC200K

no its stock filter. i didn't think there would be oil at the mass airflow i figured it should just carbon build up am i right

capt_paul

I had some oil residue in mine as well. It came up from that flex hose on the bottom rear of the airbox. I just cleaned it all up with MAF cleaner and pray that there is nothing wrong.

91RS

Not exactly on topic, but how hard is it to remove the MAF? I want to clean my throttle body and possibly do a BG Induction Service.

Glyn M Ruck

The closed circuit crankcase ventilation systems on these cars does foul the system upstream of the fuel supply where the fuel can't keep things clean.

C230 Sport Coup

All the more reason to add a compressed air filter in the circuit.

Search on 'oil catch tank'.
Don't buy the crappy ones on ebay!

Glyn M Ruck

Yes - agreed.

AzCamel

clean it, check it again in a 2weeks. see if there is still oil, if so check all hoses in going to the intake, im betting that one of those crank hose valve is failing. you can either replace it or install a oil catch can, if you do that i suggest a vented one.
Against what others have said, ebay catch can is fine, just put a breather on it and vent it, done it to mine and other 500rwhp monster and have no problems

MOBC200K

cheers everyone can you's giveme more info on the oil catch can thanks

AzCamel

all the catch can does is give a place for the oil to collect due to blow by.. venting the can gives a place for pressure to release with out going all out as in just unpluging the hoes all together, still give crank pressure.

EDIT... sorry but i totally forgot that these cars are run a closed loop system.. do without the vented can.

MOBC200K

does it make a differnce if its a m111 or m271 cos mine is a m111. is it a big problem

C43AMG

Oil catch can FTW.....installed by TVT (MBWorld sponsor)

MOBC200K

cheers for that so i take it its a common problem on mb's is it

C43AMG

I think it's common on all cars.I had the intake taken off and port & polished.It's amazing the amount of build-up after only 70k miles.

fanito

Because of a bad oil separator I had to replace my MAF and, of course, the oil separator. This cleared up my CEL... of course, after $1064 for repairs

PA_Pete

+1 I was also told that MB's are notorious for extreme blow-by (more so than other cars).

MOBC200K

oh **** thats the last thing i went they were talking about an oil catcher can but to be honest i wouldn't know where to start has anyone fitted one on the m111 engine

C230 Sport Coup

http://www.benzworld.org/forums/w203...roblems-3.html

I did it after this guy did his... can't find the thread.
Initially I ordered some POS off ebay, but then found it leaked and
was going down to 1/8" opening which would likely fry something.
I picked up some hose from Ace, and a craftsmen compressed air filter, which I got from Ace or Osh I forget, but it had the correct size opening, won't cause extra pressure in the circuit.

It's been on there a couple months, and there's maybe an oz of oil in the bottom...and I haven't driven much, maybe 1K miles...
that oz would spread out thin and make a giant mess...
over a year, I'm sure it would be a lot.

Make sure you get one that seals. I found one at home depot, but it wouldn't seal when I blew into it with the ends covered.

Damn, I can't find the thread I posted anywhere? I wonder what happened to it?

MOBC200K

cheers for the pic. i'm gonna check it in 2 wks and see what its like and take it from there i think