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#1
11-01-2002, 10:37 AM
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95-E320 cleaning EGR passages
Can the egr passages of the 104 motor be cleaned without removing the intake manifold? I know a carboned egr is a common problem. The DIY section only shows how to clean the C280. I don't feel comfortable just running a cable to knock the crud off. Is there a way to disassemble the related parts for more thorough cleaning without removing the intake? My car is in storage for the winter season. I'd like to do this before it may become a problem and I'm willing to go the extra effort for thorough cleaning.
While I'm at it, I'd like to know how to clean the throttle body. I just got this car last summer, and I have a feeling a lot of these things have never been done.
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95 E320 Cabriolet, 159K 
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#2
11-01-2002, 12:20 PM
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The accumulation that causes restriction is usually right where the EGR pipe enters the lower manifold. The accumulation appears to be oil laden crankcase gases depositing their oil onto the hot EGR openning.
Most any way you attempt it you will send some of the carbon into the intake. If you saw the inside of the intake you would realize that the small amount that you could add will be inconsequential. If you are worried amount the stuff inside the manifold search for x66 in the archives.
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Steve Brotherton Continental Imports Gainesville FL Bosch Master, ASE Master, L1 33 years MB technician
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#3
11-01-2002, 02:39 PM
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Almost all of the MB techs that I know ARE now replacing the metal pipe(M104 & M112 engines) INSTEAD of cleaning it.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#4
11-02-2002, 10:51 AM
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to mbdoc /egr pipe
i have asked this before , what is involved in replacing the pipe,
there is one bracket at the rear of the head that is impossible to remove how do you attack this bracket , when the rest of the brackets are straightforward to remove
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#5
11-02-2002, 05:04 PM
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Re: the new improved pipe-
Let's get a PN and cost from MercedesShop.com; I need one ,too.
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RIP "Betsy" (Oo=*=oO) '96 E 3 2 0 (W 2 1 0) M 1 0 4 (Totalled) Spaces in sig so as not to screw up the SEARCH; every time someone searches for that MB they don't want my sig! 2004 Audi A8L '98 VW Passat 1.8T 5M '87 Alfa Romeo Milano 2.5L 5M '67 Impala convertible, 327cid
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#8
11-03-2002, 09:03 AM
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My question again is to the profesionals on this board
how do you acces item 62 in the diagram at the rear of the head by the way, thank you gentleman for the ipc diagrams and listing this is one way to solidify the ifnormation being passed around on this board.
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