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#1
01-10-2007, 02:51 AM
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1990 300ce EGR removal
It has the 104 engine.
I wanted to clean the EGR tube. I thought to remove the EGR is somewhat a easy job. Wrong! After the two bolts that sit the EGR on the exhaust were removed, the big nut was loosen, I found it is impossible to seperate the EGR with the EGR tube apart. There is some kind of coupler sitting in between which I can't figure out. Can anybody give me some directions?
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11 S550 09 C300 91 560SEL 90 300CE 84 380SE 83 240D 
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#3
01-11-2007, 07:05 AM
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EGR: A Red Herring?
Like many M104 owners, I too spent a not insignificant portion of my too-short life cleaning the EGR pipe. As I stood there hunched over, back in pain, fingers filthy, sweat beads trickling down my cheeks, it occurred to me that this was most likely a colossal waste of time.
Why? Because a clogged EGR pipe is the best thing that can happen to a motor, next to the EPA having never been formed to begin with. A clogged pipe may cause you to fail an emissions inspection, but a better solution for that would be to move to another state. Unless you have a rough idle caused by an EGR valve being stuck OPEN, which you can test with a Mity-Vac at the EGR valve, then you can rule out the EGR. Am I wrong? If so, please calibrate me.
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#4
01-11-2007, 06:19 PM
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You are definitely right. My 300ce failed smog, high NOx. Plugged tube, that is, gives me a code 16 which was an ongoing problem for a long time. I simply was too lazy to get onto it. Resetting the code was a lot easier.
I am using a home made rooter to clean the tube, as some members suggested here. I don't think it a job too bad. In fact, the FAIL part of my smog hurts my esteem, a lot more than my back  .
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11 S550 09 C300 91 560SEL 90 300CE 84 380SE 83 240D Last edited by fpharryc; 01-11-2007 at 06:59 PM.
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