Well I have been looking over the situation and I'm not making too much progress. I did find a nipple broken off on the metering valve on the main vac line. That's easy with a new part. The rest of it isn't so easy. As best I can tell, several connections were not right even prior to my knocking things apart. At least that is my assessment going by the diagram found afixed to the car. Maybe the strangest situation is a black poly tube about 1 foot long and about 5mm diameter going thru the firewall. I noticed it pulled out with little or no resistance. I also pulled another small black tube out the same way. I pulled the panel off under the drivers side to see if I could find where they came from but couldn't find the place of connection...soooo I'm still quite puzzled. I hate to say it but I may have to break down and find a mechanic who has the ability to put it back in shape and have it done.

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85 300D
245K and running strong