Misfire problem
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C63 amg estate
Misfire problem
Hi, I'm having problems,or shall I say my local mercedes dealer are.I have a misfire problem and no one can find the fault,any ideas guys......it has had a kleeman map and exhaust fitted
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From: Denham Springs,LA
'12 C63 Black Series, '12 ML350 BlueTech
Are you saying your MB dealer cannot find the problem???
Either way as mentioned above pull the error codes but most likely it's either your plugs/coils, O2 sensors or fuel system. GL
Either way as mentioned above pull the error codes but most likely it's either your plugs/coils, O2 sensors or fuel system. GL
Thread Starter
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C63 amg estate
C63
The dealers can't find the problem,3 weeks now,all they want to do is charge me money for parts that aren't really the problem.The latest off them today is the compression is down on 2 cylinders....what's that got to do with a misfire
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From: Denham Springs,LA
'12 C63 Black Series, '12 ML350 BlueTech
Loss of compression can be the root cause of misfire as well. A cylinder losing compression means the cylinder loses air/fuel mixture before behind ignited. Hence the misfire.
Are the 2 cylinder adjacent to each other? If yes it could be a leaking head gasket as the fault.
Are the 2 cylinder adjacent to each other? If yes it could be a leaking head gasket as the fault.
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Joined: Oct 2012
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From: Denham Springs,LA
'12 C63 Black Series, '12 ML350 BlueTech
Looks like they narrowed it down to low compression on 2 cylinders.
It depends how confident you are and what is the relationship with them.
I don't know why they would tell you it is a compression issue if it is just a spark plug/O2 sensors or else?
Just ask them to show you the test results for the spark plugs or O2 sensors if you don't feel confident.
How old is your car? Don't you have a warranty or extended?
It depends how confident you are and what is the relationship with them.
I don't know why they would tell you it is a compression issue if it is just a spark plug/O2 sensors or else?
Just ask them to show you the test results for the spark plugs or O2 sensors if you don't feel confident.
How old is your car? Don't you have a warranty or extended?
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Thread Starter
Newbie
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C63 amg estate
It's a 2009 with stage 2 kleeman conversion,I only went to the dealership to keep up the service history...warranty ran out when it did have a warranty they only say ' because it's a used car warranty it's not covered ' I really don't have faith in them ,I had issues with a cls 55 amg a few years back with a problem they could,nt fix.Luckily I got out of that car after a 2 year fight withe finance company as the garage I bought it off sold me duff car,I got my money back.All dealerships think about is money,money,money..don't know if that's the same in the usa but here in the uk it's like that
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MBWorld Fanatic!
Joined: Oct 2012
Posts: 3,704
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From: Denham Springs,LA
'12 C63 Black Series, '12 ML350 BlueTech
Some MB dealerships in the US are more about their money than others like anywhere else in the world.
Your best bet would be to find a good "indie" shop knowledgeable in german cars. But yeah if the diagnostic is true the only cure would be to changed the head gasket if the gasket is gone. Ask them for the compression test results.
What you can do is plug in a OBDII tool to check the codes which will help you identify the cylinders/bank in fault. Then check the state of your plugs for the corresponding cylinders. That would be a good start to double check what MB would have done.
Your best bet would be to find a good "indie" shop knowledgeable in german cars. But yeah if the diagnostic is true the only cure would be to changed the head gasket if the gasket is gone. Ask them for the compression test results.
What you can do is plug in a OBDII tool to check the codes which will help you identify the cylinders/bank in fault. Then check the state of your plugs for the corresponding cylinders. That would be a good start to double check what MB would have done.
