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Old 06-14-2007, 07:45 PM
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rino rino is offline
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Join Date: Mar 2005
Location: Southern California
Posts: 553
Quote:
Originally Posted by kerry edwards View Post
I concur. If it sprays up, we definitely want live video!
Very funny

OK, I did that test and

from the intake manifold: not one single oil drop
from the breather hose (from the valve cover): not one single oil drop
from the vac pump hose that goes to air filter: PLENTY OF OIL!

So the diagnosis is, according to what was said before, a faulty vac pump diaphragm (and possibly valve checks).

Very strange is that the brakes seem to be working fine (maybe they never did, so I wasn't able to tell), and that there was no oil in the vac lines that I checked, and that the hose from pump to air filter looked clear - all of which would point elsewhere than a pump diaphragm failure... Anyways...

At this point I have two questions...

Where is most advisable to get the vac pump diaphragm (and valve checks?), online or from a local dealer? (if I can save 20 bucks, to me it's all bread from heaven)

Even though I looked at the pictures suggested in an earlier post, I still don't feel I understand the correct procedure for operating on the pump... Is there a tutorial somewhere, or can someone explain the procedure step-by-step?
Also, are we sure that I won't need to remove the radiator on the 240D in order to work on the pump? (the space between the front of the pump and the radiator, after removing the fan blade and its housing, seems awfully limited to me...)

Thanks so much for the invaluable help all of you have been providing!
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1979 240D, W123, 105K miles, stick, white w/ tan interior.
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