While examining my engine and vacuum system on my recently acquired 1982 300 D Turbo, I was SHOCKED, SHOCKED do you hear, to discover the vacuum hose to the EGR valve deliberately plugged!!! The car seems to run great... starts right up, cruises smoothly and is getting around 28MPG.

QUESTION: What's the advantage/benefit to re-activating the EGR valve? I don't wish to pollute unnecesarily, but it seems to me a smoothly running engine is very efficient.

What is the right thing to do?

Mr Goodfahrt

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Mr Goodfahrt (pronounced FAIRT... means "good trip" in German)

1982 300D Turbo Pastel Gray (off-white) 200k+(?)
newbie but willing