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Oil Leak at Vaccuum Pump

10531 Views 11 Replies 5 Participants Last post by  veli410, 
M
'05 C230 Kompressor Sport Coupe
I have a significant leak from around vacuum pump for brake system attached at rear of engine to the camshaft. I have been told it is a common source for an oil leak. My question is: Is this simply due to a bad seal and pulling the existing pump and replacing the gasket and reinstalling same pump is likely to eliminate the leak, or is replacing the pump itself (along with a new gasket) recommended? Pump price is $180-200 vs. $3.00 gasket.
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S
Same here. I smelled some fuel and they found a leak at the back of the engine. Replacing the gasket work. No problem now. total cost with labor is about $100.
Best regards,
Song
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M
Thank you! How long has it been with no more leaking?
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S
that's a good question. It's been only about a week after fixing the gasket. I think it was a temperature related issue (in my case), as the gasket leaks on a -46'c day in Edmonton. It was perfectly fine before.
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ezzo
3
I've been trying to look for a thread talking about this issue for my 08 E300 with m272 engine. I guess this is the closest. I have a leak as per the attached pictures (vacuum pump originally installed by Benz with part number 272 230 04 65). I realize this is not the latest as the updated pump is 272 230 05 65. I am really not inclined to change the whole pump. I got the O-ring and I am looking for the gasket seal. Could some one pass me the part number for the gasket seal for this pump?

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ezzo
I guess this is just a dead thread. I re-posted to this new thread http://www.benzworld.org/forums/gen...-pump-oil-leak-gasket-272-a.html#post16149178
I hope someone can confirm whether the vacuum pump gasket can be sold separately.
Thanks!
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rudeney
You might have better luck in the proper forum for your car. The W203's with the M272 engines did not use this pump. I suspect the OP in this thread was talking about the oil centrifuge cover.
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ezzo
OK. Thanks, Rodney.
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veli410
rudeney said:
You might have better luck in the proper forum for your car. The W203's with the M272 engines did not use this pump. I suspect the OP in this thread was talking about the oil centrifuge cover.
Click to expand...
I have a 2007 C230 with an M272 Engine that has this vacuum pump. Its making noise, leaking oil and my brakes are hard so I will be replacing it. The centrifuge cover is on the other side, the passenger side, I replaced the centrifuge cover and hose while chasing a rough idle but didn't solve the issue, it's a subtle rough idle that comes when the car is cold. After its warmed up, the rough idle only manifests itself in sporadic intermittent single stumbles, like a single shake that feels like the car wants stall. They appear 2-3 times in a 30 minute period idling :confused::confused: The Engine/Transmission mounts are all new so I know that's not it.

Some one in another thread said the vacuum pump replacement solved his rough idle :confused: I guess I will find out. I can't find a vacuum leak anywhere.
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ezzo
veli410 said:
I have a 2007 C230 with an M272 Engine that has this vacuum pump. Its making noise, leaking oil and my brakes are hard so I will be replacing it. The centrifuge cover is on the other side, the passenger side, I replaced the centrifuge cover and hose while chasing a rough idle but didn't solve the issue, it's a subtle rough idle that comes when the car is cold. After its warmed up, the rough idle only manifests itself in sporadic intermittent single stumbles, like a single shake that feels like the car wants stall. They appear 2-3 times in a 30 minute period idling :confused::confused: The Engine/Transmission mounts are all new so I know that's not it.

Some one in another thread said the vacuum pump replacement solved his rough idle :confused: I guess I will find out. I can't find a vacuum leak anywhere.
Click to expand...
Please do come back with your findings so we can all learn from this.
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ezzo
veli410 said:
I have a 2007 C230 with an M272 Engine that has this vacuum pump. Its making noise, leaking oil and my brakes are hard so I will be replacing it. The centrifuge cover is on the other side, the passenger side, I replaced the centrifuge cover and hose while chasing a rough idle but didn't solve the issue, it's a subtle rough idle that comes when the car is cold. After its warmed up, the rough idle only manifests itself in sporadic intermittent single stumbles, like a single shake that feels like the car wants stall. They appear 2-3 times in a 30 minute period idling :confused::confused: The Engine/Transmission mounts are all new so I know that's not it.

Some one in another thread said the vacuum pump replacement solved his rough idle :confused: I guess I will find out. I can't find a vacuum leak anywhere.
Click to expand...
Did you get to change your vacuum pump? Did it fix your rough idle?
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veli410
ezzo said:
Did you get to change your vacuum pump? Did it fix your rough idle?
Click to expand...
I did change the vacuum pump. No noticeable difference. I still have that random shudder/rough idle and still no codes or CEL. Brakes are still somewhat hard in my opinion but It could be because I drive an accord and a C230, The accord brakes are super soft and responsive so I may just be feeling the difference between the two.
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