E-Class (W211) 2003-2009

2007 E350 misfire codes P0206 and P0306

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Old Apr 26, 2016 | 01:54 AM
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2007 E350 misfire codes P0206 and P0306

I am new here and ofcourse in need of help.I have a 2007 E350 4matic that is throwing p0206 and p0306.I swap injectors,coils and sparks plugs but the codes are the same.There is power on injector wires.I also check fuel pressure and it was reading 50 psi.So i don't know what else to check.
Any help will be appreciate it.The car has 111k Miles on it.
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Old Apr 26, 2016 | 01:35 PM
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'71 Pinto
Next step check wiring to and/or replace injection nozzle (part # 2720780123) for cylinder 6
Attached Thumbnails 2007 E350 misfire codes P0206 and P0306-capture.jpg   2007 E350 misfire codes P0206 and P0306-capture2.jpg  
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Old Apr 26, 2016 | 02:37 PM
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Thank you for your help. Do you have the part 2 of the video.Also I swap the injector in #5 with #6 and 6 still misfiring.I also did test the injector connector with noid light.I started the car and it blinks for like 30 seconds and the light stop.
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Old Apr 27, 2016 | 01:54 PM
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2009 E550 2000 Honda civic mash n' go
Are we sure the cylinders throwing misfires actually have spark???
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Old Apr 27, 2016 | 01:54 PM
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2009 E550 2000 Honda civic mash n' go
And does it run like dog shyt?
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Old Apr 27, 2016 | 03:39 PM
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Originally Posted by cmriv
And does it run like dog shyt?
So i went bought new injector put clear the start the car and still running like crub and same codes came back.
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Old Apr 27, 2016 | 03:43 PM
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2009 E550 2000 Honda civic mash n' go
Originally Posted by kulangj81
So i went bought new injector put clear the start the car and still running like crub and same codes came back.
you need to make sure you are getting spark to those faulty cylinders.
if so next step, compression test, bore scope that cylinder, stuff like that. To me you either have a bad cylinder head. or a ME issue

Last edited by cmriv; Apr 27, 2016 at 03:46 PM.
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Old Apr 27, 2016 | 03:45 PM
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2009 E550 2000 Honda civic mash n' go
Complaint
Customer complaints of misfire, rough running and diminished performance on vehicles with 272 or 273 engines. Check Engine Light CEL (MIL) might be on. Compression and or leak down test results show values out of specification.

Cause
Unfavorable wear of exhaust valve seats in cylinder heads. Refer to image examples in the attachments


tisk tisk
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Old Apr 27, 2016 | 08:50 PM
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[QUOTE=cmriv;6785329]Complaint
Customer complaints of misfire, rough running and diminished performance on vehicles with 272 or 273 engines. Check Engine Light CEL (MIL) might be on. Compression and or leak down test results show values out of specification.

Cause
Unfavorable wear of exhaust valve seats in cylinder heads. Refer to image
No fuel coming out #6 after installing new injector.
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