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

I don't think there really is much advantage to reconnecting it. I would leave it alone. If anything, it will run better the way it is now.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k

I agree, rejoice in the fact that you aren't running soot back into the intake and engine. Your car is much better off with the EGR blocked off.

MUCH BETTER BLOCKED!!!!!

I completely removed my EGR valve and block the holes in both manifolds after accidently breaking the pipe. IMHO this makes the car smoke less, and on an old engine should reduce pollution.

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83 240D four bagger stick diesel 276K

Just thought of another thing, with the EGR you lose power, which makes you tend to stomp on the gas more and use more fuel.

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83 240D four bagger stick diesel 276K

Unanimus!... OK, it will remain plugged. Thanks for the opinions.

MAXWELL: Will just plugging it like it is now result in the reduced smoke you report and is it hard to remove and plug holes? Sounds like a worthwhile project if it will be disbled anyway.

Anybody know if this would prevent the car from passing a MD state inspection?

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

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

Very simple to make a blockoff plate that fits under the EGR valve. I used 1/16" aluminium, used the gasket as a template, installed it cannot be seen. My EGR was a little open (stuck) so the plate closed it off completely. Inspections on diesels generally are snap-idle tests, opacity tests and visual inspections. A thin blockoff plate will go completely unnoticed and as the EGR is still mounted, it will pass visual. I wouldn't worry about it. RT

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When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K

I wonder if the EPA Gestapo read this site?

P E H

How do I block my EGR on 92 300D...
I've been told that all I need to do is plug the vacuum line..?

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Wayne Jockers
1992 300D

I don't think the Federales bother with 21 year old diesels. In Md they are exempt from emissions inspections....

Would be more nervous about driving on Bio-diesel.... can catch you by sniffing.... wonder if they will come up with remote sniffers like they do stop lite cameras!

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

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

we do not have self serve gas stations in Oregon but you are allowed to pump your own diesel at most truck stops at the diesel pumps only section but not if they have gas and diesel pumps on same block.I asked about this at a big chain and the felow said that company policy forbid pumping your own diesel because they might be selling fuel to a terrorist!!!!!! some how this logic passes me by.......
William Rogers......

I wish we had some places like that in Oklahoma. It gets cold in winter

Wayne, plugging the vacuum line won't help if you have a leaky egr. Blocking it off is the sure way to disable it. It's worth the effort to make the plate.

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95 E320 Cabriolet, 159K

82-300TD:
I wish we had some places like that in Oklahoma. It gets cold in winter

Okay, I know this is off-topic, but I have to interject here. I was born and raised in Iowa and have lived in OKC for the last year and some odd months. Believe me, Oklahoma is not cold. Cool at times, yes; a few cold days, maybe; but characterizing it as cold, no.

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Keep everything as simple as possible-but no simpler--Albert Einstein

That guy was messing with your head. As you know that it's that crazy law in Oregon that forbids you from pumping your own fuel. The reason is that the state fire marshal thinks the average citizen is incompetent to pump their own fuel. There's only one other state that forbids you to pump your own fuel and that state is New Jersey. They have a totally other ridiculous reason for not being able to pump your own gas.

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DJ


84 300D Turbodiesel 190K with 4 speed manual sold in 03/2012