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  #1  
Old 03-02-2019, 03:58 PM
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04 BMW X5 4.4i misfire CYL 1 and check sum failure

Hello all,

I have a 2004 BMW X5 4.4i and I have a cyl. 1 misfire and checksum failure. What i have done so far is replaced the spark plug and swapped the coils to test. It popped the same code again. Any ideas where to go next?
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Old 03-02-2019, 04:39 PM
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What's the actual error code?


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Old 03-03-2019, 02:21 PM
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10062 and 10050 or it says 274e and 2742
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Old 03-03-2019, 02:41 PM
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Also just got a 2743 for the first time which is misfire in cyllinder 5
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Old 03-04-2019, 07:50 PM
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plugs fouling due to valve stem seal issue??
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Old 03-05-2019, 11:39 AM
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Not sure I just did a compression test on all cylinders and they are all really even. The injector on cylinder one is working. There is no oil fouling or anything the plug looks perfect.
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Old 03-05-2019, 01:34 PM
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check grounds?
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