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Old 12-04-2016, 01:59 PM
300decel's Avatar
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Join Date: Dec 2012
Location: WA State
Posts: 62
Oil leak from water pump? Am I seeing things?

1976 300D which likes to drip oil...a lot. I was watching under the hood yesterday to try and ID the leak(s) and saw oil dripping from what appears to be the weep hole on the water pump.
I admit the oil could be tracking from somewhere else, but is it possible for a water pump to leak oil? I'm quite puzzled here....
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Old 12-04-2016, 02:20 PM
dkveuro's Avatar
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Join Date: Jun 2003
Location: Here an' there.
Posts: 2,548
Small bore oil line banjo bolt washer/s by coolant pump.

[ ]

"A liberal is someone who feels they owe a great debt to their fellow man, which debt he proposes to pay off with your money."
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Old 12-04-2016, 05:56 PM
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Join Date: Oct 2012
Posts: 9,165
I once had a Mercedes which had a hole in the casing behind the water pump. It was leaking oil and it looked like it was coming from the water pump but I knew this could not be.

So I took out the radiator and almost everything on the front of the engine and found the case had a hole worn in it from the inside. A tiny hole but one that oil was coming out of.

So I cleaned the area on the outside and squeezed in a bunch of JB Weld. This plugged the hole until I could find a good used case and do it right.
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