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Thread: 2003 745li running rough after tune-up

  1. 06-17-2020, 12:43 PM #1
    vrilman
    vrilman is offline Member
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    2003 745li running rough after tune-up

    Just put all new plugs and coils on my 2003 BMW 745li and now it runs really rough. Keeps throwing codes for misfires. Barely runs at idle, not much power when accelerating. Need help
    Last edited by vrilman; 06-18-2020 at 09:52 AM.
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  2. 06-22-2020, 10:32 AM #2
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    jclausen
    jclausen is offline Jbird
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    Only misfire faults?
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  3. 06-24-2020, 01:55 PM #3
    White94RX
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    Clearly you did something wrong. Check your work.
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  4. 06-28-2020, 09:22 AM #4
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    jclausen
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    Yup
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  5. 07-21-2020, 05:25 PM #5
    vrilman
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    Update...after checking, found 2 of the new Bosch coils were working intermittently. Returned them for 2 new ones and engine running perfectly now.
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