Ok, I received the Mity vac and did some testing. No leaks from the pods under the dash. Had some minor leaking at some hose connections under the hood that when fixed helped the problem but did not cure it. I was just not having enough vacuum under acceleration. I think it was bleeding some off in the injection pump where the vacuum line goes in there, I think for the engine kill. But I got to thinking about a '76 Olds Cutlass I had that had a vacuum ball on it. It was a vacuum storage ball with two nipples on it. One going to the pump and one going to the vacuum devices on the car. I went to Napa and ordered one and installed it yesterday. It completely cured the problem. No drop in vacuum under acceleration inside the car now at all.

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1995 S-350
370K + SOLD
1952 220B Cabriolet
39K kilometers + SOLD
1998 E300D
310K +
2012 E350 BlueTec
120K