How to remove this bolt? (EGR Valve cleaning)
Thread Starter
Junior Member
Joined: Jun 2012
Posts: 55
Likes: 8
From: Pleasant Hill, CA
2013 C63 P31 Eurocharged, 2006 SLK55 R171, 2013 Audi RS5
How to remove this bolt? (EGR Valve cleaning)
Hi, I need to clean my EGR valve and I was able to remove all the necessary items except this one bolt below the fuel rail. How exactly did anyone access this? I couldn't find any way with a few different options. Pulling the whole fuel rail is kind of a pain and I'm not sure how. Sooo close though! Thanks to anyone who helps. I tried wiggling the "union joint" which is the rusted looking big bolt and it loosened but didn't seem to budge much more than that.
http://imageshack.us/photo/my-images...oto0116tq.jpg/
http://imageshack.us/photo/my-images...oto0116tq.jpg/
Newbie
Joined: Dec 2010
Posts: 5
Likes: 0
From: Calgary, Alberta, CANADA
CLK 320 Coupe
Try a universal socket on it
Super Member
Joined: Nov 2001
Posts: 565
Likes: 0
From: the OC, So Cal
2000 CLK 320
Once the rusted big bolt is freely moving, you should be able to pull up on the pipe to remove it. Use a short wrench to loosen the rusted big bolt.
Removing the EGR pipe from the other end takes some finesse where you have to wiggle it around at certain angles to pull it out (after the 2 bolts are removed that hold it).
You don't have to remove the fuel rail to get to the bolt. You just have to remove the screws that hold down the fuel rail and once their off, you should be able to nudge the fuel rail a bit to the side to allow downward access to the bolt holding the EGR valve (using an extension). There are instructions on how to remove the fuel rail on W210 forum I believe (not sure) but it's straight forward with just looking for the screws that hold down the fuel rail (again, you don't have to remove and lift the fuel rail off). The important part is to bleed the fuel rail into a rag to relieve the pressure but I only saw half a teaspoon of fuel come out, and it didn't seem like high pressure either. Good luck.
Removing the EGR pipe from the other end takes some finesse where you have to wiggle it around at certain angles to pull it out (after the 2 bolts are removed that hold it).
You don't have to remove the fuel rail to get to the bolt. You just have to remove the screws that hold down the fuel rail and once their off, you should be able to nudge the fuel rail a bit to the side to allow downward access to the bolt holding the EGR valve (using an extension). There are instructions on how to remove the fuel rail on W210 forum I believe (not sure) but it's straight forward with just looking for the screws that hold down the fuel rail (again, you don't have to remove and lift the fuel rail off). The important part is to bleed the fuel rail into a rag to relieve the pressure but I only saw half a teaspoon of fuel come out, and it didn't seem like high pressure either. Good luck.
Member
Joined: Jun 2010
Posts: 195
Likes: 0
From: San Diego
02 CLK430
What you need is a 10mm swivel socket in 1/4 drive, like so:
http://m.sears.com/productdetails.do...threshold=49.0
http://m.sears.com/productdetails.do...threshold=49.0
Thread Starter
Junior Member
Joined: Jun 2012
Posts: 55
Likes: 8
From: Pleasant Hill, CA
2013 C63 P31 Eurocharged, 2006 SLK55 R171, 2013 Audi RS5
The problem ended up being that it came off with a 3/8" socket, oddly enough. I didn't think I needed the in my toolbox for MB, lol.
