C63 AMG (W204) 2008 - 2015

First CEL and misfires

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Old 12-27-2011, 04:22 AM
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First CEL and misfires

All, after a year of driving, a few days ago the CEL light up on my car. I was driving normally when suddenly it light up and the car experiences a bad misfiring. I call the dealer and got the car towed to their workshop and they informed me that cylinder 1-5 are misfiring
They said it's because of bad fuel. I have always filled my car with the same fuel from the same fuel station and i've been using this particular tank for about a week before the problem starts.

I have attached the short test result and I hope members of this forum can shine a light on what's going on with my car.
Thanks
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Old 12-27-2011, 04:43 AM
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Sorry to hear about that. Hope everything gets fixed asap.
What octane gas do you usually fill up?
Old 12-27-2011, 04:46 AM
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Hi AMG,
I always fill with RON 95
Old 12-27-2011, 04:53 AM
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that is strange because with 95 octane misfiring shouldn't occur assumming everything else is ok.

Hope everything gets fixed up for you
Old 12-27-2011, 06:20 AM
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A couple of fast cars.
Similar things happened to me with about 600 miles on the car, I pulled over on side of freeway, restarted the car (light stayed on) drove to dealer that morning with no issues. Was misfiring 4-8. Reset the code and haven't had the problem since. Now have 2800 miles and two track days. Don't know why the code happened.
Old 12-27-2011, 08:32 PM
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Originally Posted by derek
Similar things happened to me with about 600 miles on the car, I pulled over on side of freeway, restarted the car (light stayed on) drove to dealer that morning with no issues. Was misfiring 4-8. Reset the code and haven't had the problem since. Now have 2800 miles and two track days. Don't know why the code happened.
Probably bad fuel.
Old 12-27-2011, 09:41 PM
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Originally Posted by derek
Similar things happened to me with about 600 miles on the car, I pulled over on side of freeway, restarted the car (light stayed on) drove to dealer that morning with no issues. Was misfiring 4-8. Reset the code and haven't had the problem since. Now have 2800 miles and two track days. Don't know why the code happened.
at what miles did you get the tune?
Old 12-28-2011, 06:14 AM
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A couple of fast cars.
Originally Posted by CELLryuu
at what miles did you get the tune?
Just over 1,000.
Old 12-28-2011, 10:24 PM
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All, I just want to update, got the car back from the dealership and it's running perfectly ok now. They just drained the fuel tank and put in new fuel then problem solved
Old 12-29-2011, 12:23 AM
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Glad to hear everything is taken care of.
You should occasionally pour in some MS109 along with the current fuel your using.

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