C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

HELP!!w203 v6 engine cylinder diagram

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Old Sep 19, 2011 | 07:27 PM
  #1  
tazilla's Avatar
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v6c230ss
Exclamation HELP!!w203 v6 engine cylinder diagram

Hey everyone, CEL popped on the wife's car. Brought it to a MB certified shop to get it checked out. Came back with...

MISFIRING(P0300)
MISFIRING OF CYLINDER 2: DAMAGES TWC(P0302)
MISFIRING OF CYLINDER 1: DAMAGES TWC(P0301)
MISFIRING OF CYLINDER 5: WORSENING OF EXHAUST EMISSON VALUES AFTER ENGINE STARTS(P0305)

Going to be replacing all of the sparks. Also will need to replace cylinder 1 & 2 ignition coil per TECH.
My question is...what is the layout of the spark plugs? Driver side obviously has 3 in-line from front to rear as well as the passenger side.

??Is it Driver side(front to rear):1,2,3??
??Is it Passenger side( front to rear):4,5,6??

PLEASE HELP!!!

THANKS IN ADVANCE
Tazilla

Last edited by tazilla; Sep 19, 2011 at 10:56 PM. Reason: stupid : and "D" together made smiley face smh
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Old Sep 19, 2011 | 09:42 PM
  #2  
Rev 2 Liv's Avatar
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Sounds like your catalytic converter or something in the exhaust manifold is forked.

Last edited by Rev 2 Liv; Sep 19, 2011 at 09:44 PM. Reason: removed erroneous info.
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Old Sep 19, 2011 | 10:58 PM
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v6c230ss
no. I have the dianostic sheet. Its the ignition coil for cylinder 1 and 2. That why I need to know where those two are instead of guessing. Anyone???
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Old Sep 19, 2011 | 11:18 PM
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2007 C280 4matic Avantgarde
Originally Posted by tazilla
no. I have the dianostic sheet. Its the ignition coil for cylinder 1 and 2. That why I need to know where those two are instead of guessing. Anyone???
Cylinder 1 is passenger side closest to radiator then #2 and #3 closest to windshield
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Old Sep 19, 2011 | 11:21 PM
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Originally Posted by ontmiss
Cylinder 1 is passenger side closest to radiator then #2 and #3 closest to windshield
Thanks...you the man!!!
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Old Sep 19, 2011 | 11:34 PM
  #6  
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From: Mississauga, Ont.
2007 C280 4matic Avantgarde
Originally Posted by tazilla
Thanks...you the man!!!
Here I found a pic
Attached Thumbnails HELP!!w203 v6 engine cylinder diagram-1.jpg  
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Old Sep 20, 2011 | 11:30 AM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Good pic!

Please note for future reference that cylinder identification is stamped on/cast into the heads.

Also note from an OBDII perspective. Cylinder 1 is always in Bank 1

Last edited by Glyn M Ruck; Sep 20, 2011 at 11:32 AM.
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