Oil in MAF
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Joined: Feb 2009
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From: Ireland, co. louth
c200k
Oil in MAF
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 
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From: In Kush Land So cal
02 C320 Sedan
What type of air filters are you running?
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From: Las Vegas, Nevada
2013 C350 Coupe, 2005 C230K Kleemann Sedan, 2013 GLK350 4matic
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.
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
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.
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
Search on 'oil catch tank'.
Don't buy the crappy ones on ebay!
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
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From: Tucson, Az
10 GLK350/ 15 Accord/ 94 Supra Turbo
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
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
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From: Tucson, Az
10 GLK350/ 15 Accord/ 94 Supra Turbo
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.
EDIT... sorry but i totally forgot that these cars are run a closed loop system.. do without the vented can.
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From: North Carolina
98 Black C43 , 12’ ML 350 Blutec
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98 Black C43 , 12’ ML 350 Blutec
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From: SE PA
2001 C320
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
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?
Last edited by C230 Sport Coup; May 5, 2009 at 04:52 PM.
