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5.5 amg misfire on 2 cylinders. Help me please!

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Old 04-05-2013, 04:34 PM
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Clk55 and m3
5.5 amg misfire on 2 cylinders. Help me please!
My new clk55 has developed a mis-fire on cylinders 1 and 7. I think it only does at idle and its not consistent.

If it was an MAF or an EGR valve would it show as a fault on cylinders 1 and 7?

Please help with any opinions as i can't afford to start chasing my tail changing loads of parts!

Thanks
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Old 04-05-2013, 05:16 PM
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Stage 3 63
Check lamba sensors and do a compression test and see

Acid
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Old 04-05-2013, 05:20 PM
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Are lamba sensors part of the exhaust? If so would they make cylinders misfire? I hope to god my compression is okay!
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Old 04-05-2013, 05:23 PM
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Yes they are if they are not working they can cause misfire
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Old 04-05-2013, 05:40 PM
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Would removing the secondary cats and changing to a higher octane fuel cause any issues? I've done both of these lately.
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