My '90 300SE has an oil leak. Last week I was under the car and noticed the oil looked as though it was coming from what looked like a rubber hose that attatched to a pump like thing located above the alternator.

What is the pump thingie and is this hose a probable area for an oil leak? I tried to take it to my tech, but they are a man short and can't get to it.

I'd appreciate any help.

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Mr. BILL

91 300E 120K
90 300SE 275K (sold)
92 BMW 525iM 120K
90 BMW 525iA 175K
85 300D 175K (sold)
84 300SD 245K (sold)

You are probably talking about the AIR pump. The leak is probably from the upper timing cover/head gasket. The oil from this leak typically covers the AIR pump, its hoses, and the alternator.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

Thanks Steve,

From what I have gathered from previous posts, this probably isn't a DIY job. I think my tech said it's about a 2.5 hr job.

Does that sound right? if so, I think I'll let them handle it.

__________________
Mr. BILL

91 300E 120K
90 300SE 275K (sold)
92 BMW 525iM 120K
90 BMW 525iA 175K
85 300D 175K (sold)
84 300SD 245K (sold)