I will go get a gauge and check the pressure. Where should I put it in?

Is the EGR the black box on top of the valve cover? If it is I believe that it is all hooked up. What is the reason for it if we just unhook it?

Thanks again, I hope that I just have a vacuum line that is bad.

DK

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1983 300sd 253,000 + 13,000 (10,000+ on veggie and biodiesel)= 266,000
1983 300sd 390,000 (Leaky windshield seal) Known to me as the shower car. Parts car now!
1 junk 300sd Watch out for the skunk that lives underneith it!