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#1
01-26-2008, 05:56 PM
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Identifying engine components W210 M104.995
Hi all,
I have had my W210 1996 E320 since 10 days and would like to understand more about the engine M104.995. Please help me identify the components in the picture below. I removed the air cleaner and all engine covers for more visibility. I got so far, admittedly mot much  0: transmission fluid dip stick 1: 2: 3: MAF sensor 4: Ignition coil 5: 6: 7: 8: 9: Oil cap 10: (don't know electrical cable to what?) 11: (don't know, looks like injector - red part under wire harness) 12: (don't know electrical cable to what?) 13: 14: 15: (don't know electrical cable to what?) 16: (don't know electrical cable to what?) 17: thermostat 18: (don't know electrical cable to what?) 19: (don't know, looks like AC hose) 20: (don't know, looks like AC hose) 21: throttle body intake 22: air intake magnifold 23: 24: 25: ABS 26: Windshield water container 27: Coolant hose 28: Coolant hose 29: (don't know, it's a black container for fluid, maybe power steering fluid) I'd appreciate it if you could name the components with their number. Besides where are the spark plugs, near part # 11, 12? 
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE Last edited by Texholdem; 03-05-2009 at 09:54 PM. 
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#2
01-26-2008, 06:11 PM
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1: egr valve
2: air injection valve opens when vacuum is applied from #6 3: MAF sensor 4: Ignition coil x3 5: spark plug wire end x3 6: egr and air injection switch over valves 7: coolant port at cylinder head 8: cam adjuster solenoid 9: Oil cap 10: engine harness cable to coils 11: fuel injector x6 12: engine wiring harness, to injectors, sensors etc.. 13: fuel pressure test port 14: fuel pressure regulator 15: cam sensor 16: cam sensor connector cable 17: thermostat 18: throttle actuator connector 19: fuel supply line and return 20: brake booster hose 21: throttle body intake boot 22: air intake manifold 23: fuel cooler supply 24: fuel cooler 25: ABS 26: Windshield water container 27: Coolant hose 28: Coolant hose 29: power steering reservoir
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1967 250 S 1967 280SE 1968 250S 1971 280 SE 1973 220 1974 280 S 1975 450 SEL 1976 220 D 1979 300SD 1983 300 SD 1985 230 TE euro 1986 280SL 1986 500 SEL euro 1986 190E 2.3 1990 300 SE 2003 C230 K 2004 C230 K 1987 560SEL 1987 300SDL now in canada 2005 C230 1998 C43 AMG Sold to DON 1993 190E 2.6 300TD Former daily driver Totaled current: R320 CDI Ram 2500 Cummins Last edited by Carson357; 01-26-2008 at 06:16 PM.
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#3
01-26-2008, 06:14 PM
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Isn't 14 a part of the high-pressure fuel delivery lines to the fuel injectors?
If you look at 4 & 5 closely, you'll find them linked together in pairs, they all connect to the spark plugs underneath (the M104 uses a wasted spark ignition system, so two plugs fire in two separate cylinders in an ignition cycle). Isn't 6 part of the EGR system? No. 29 is where my PS pump is, I believe that in some W210's they are made of plastic, not aluminium. Show you how little I know about my own M104, I should be able to identify most of these...
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-- Steven Harrison 1993 300E2.8 - 196K 2001 E320 4MATIC - 86K
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#4
01-26-2008, 06:29 PM
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wow, list completed in no time. Thanks a lot Carson!
Thumb up! Yet another question, #5 are the spark plug wire end but only 3x, where are the other 3 (for 6 spark plug)?
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE Last edited by Texholdem; 01-26-2008 at 06:39 PM.
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#5
01-26-2008, 06:31 PM
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Quote:
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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#6
01-26-2008, 06:45 PM
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Quote:
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-- Steven Harrison 1993 300E2.8 - 196K 2001 E320 4MATIC - 86K
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#7
01-27-2008, 02:19 AM
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New picture annotated.
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE Last edited by Texholdem; 03-05-2009 at 09:55 PM.
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#8
01-27-2008, 02:21 AM
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Quote:
 .
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1996 E320 since 1/16/08, 171K miles as of Feb 2011 --------------------------------------------------------- 1989 300CE - R.I.P. Dec 29 2007 Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE
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#9
01-27-2008, 04:45 AM
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Quote:
the brake boster is the black plactic line that passes by the abs unit, and #3 isn't actually the maf sensor, but rather the maf plug
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1967 250 S 1967 280SE 1968 250S 1971 280 SE 1973 220 1974 280 S 1975 450 SEL 1976 220 D 1979 300SD 1983 300 SD 1985 230 TE euro 1986 280SL 1986 500 SEL euro 1986 190E 2.3 1990 300 SE 2003 C230 K 2004 C230 K 1987 560SEL 1987 300SDL now in canada 2005 C230 1998 C43 AMG Sold to DON 1993 190E 2.6 300TD Former daily driver Totaled current: R320 CDI Ram 2500 Cummins
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Linear Mode
