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BMW 3-Series (E90 E92) Forum
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Misfire: Let off when you detect it or power on through while data logging?
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| 06-29-2013, 09:06 PM | #1 |
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First Lieutenant
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Rep 313
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Misfire: Let off when you detect it or power on through while data logging?
So I am always chasing endless misfires. Do you guys normally let off when you detect it or power on through so you get a full log of what is going on. I can't get myself to stay into it because I can hear the car making bad sounds and it falls flat on its face. So as soon as it does this I let off.
My friends tell me that they just keep it floored. What do you guys do? I take it that the engine is protected by killing spark so it does not take out a piston or head gasket. But during misfires it sure sounds to me like I can hear detonation.
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Currently own: 1965 Backdraft Cobra Replica, 2013 SVT Raptor, 2020 Charger Hellcat, 1967 Olds
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| 06-30-2013, 09:45 AM | #2 |
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Major
 
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Drives: 2009 BMW 335xi
Join Date: Feb 2012
Location: Maryland
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Let off of it.....
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| 06-30-2013, 10:11 AM | #3 |
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Major General
 
195
Rep 6,136
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If you are misfiring you don't really need a log of the event. You need the codes to determine which cylinder is missing, and go from there with plugs, coils, injectors in that order.
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