I am not sure what is causing the reduced vacuum. When ever I have had the minutest leak, the engine would not shut off. Now the engine shuts off very slowly.

I tried to take the pump off, but see I have to basically undress the front of the engine, right?

I couldn't start because I couldn't find the allen bits. So I used that frustration productively, found a tool chest, drove 45 minutes, picked it up, drove back, and started to put my tools in it (the ones I could find). It is an older Sears Home rolling chest and paid asking price of $65, as he loaded it in the Volvo. Now maybe later in the week I can do something.

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Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.