I searched and read previous posts regarding disabling the EGR valve on the diesels. Most of the discussion was on the 123s. The general consensus said it was okay to block the passage way between the valve and the intake.

Does anyone know specifically, if I do this on my 1987 300D Turbo, will I suffer any repercussions? Will affect any electronics and/or will I have to modify anything else? I plan to cut a metal plate to insert between the EGR valve and where it bolts to the intake.

When we replaced the injectors two months ago, we cleaned the intake from the EGR valve. This weekend as I replaced the injection pump diaphram (it's nice to stop the car without lifting the hood!), I noticed all the oil and goop that had started refilling the intake passageway just beyond the EGR valve. Since this engine has 292,000 miles, I don't think I need all the blow-by recirculating again.

Any comments are always greatly appreciated!

--Craig

Sorry I can't help you with the EGR question on the 87 3.0 liter diesel, but I noticed in your post that you replaced the diaphram in your shut-off valve to eliminate "dieseling".
I am experiencing "dieseling" with my 87 300 wagon and have a current post titled "vacuum lines". The dealer claims they "cleaned" my vacuum lines and it worked for a few thousand mile but is now running on again. Was it difficult to replace the diaphram, and how did you do it?
If I pick up any info on EGR valve bypassing on 87's, I will let you know.
Thanks, John

__________________
83 300TD wagon
87 300TD wagon
89 BMW 325IX

John,

As you stand at the front of the car and face the engine, the diaphram sits in the middle underneath the intake manifold, right behind the cutoff lever. The cutoff lever has a pin that connects to the shaft that hangs below the diaphram. Mine was a sealed metallic unit (shiny brass color) so I was unable to do more than just replace it. The replacement part is made of plastic, so it will come apart next time.

There are two bolts holding the unit on. One is easy to remove. The second bolt requires you to loosen and/or remove the intake manifold to reach it. It's about a three hour job or so claims my mechanic. As I was impatient, I didn't search for parts. The diaphram unit he used was $40.

After joining this group last November, I am finally able to answer a question! Whoopee!! 'Bout time I gave something back besides comments and questions...

--Craig