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      09-24-2023, 09:42 PM   #1
Boy_with_Joy
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Drives: F83;e92 M3;X3 35i MSpt;X1 MSpt
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P0305 CEL after Valve Cover and Spark Plug DIY

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Hi all,

Just completed OFHG, valve cover (genuine BMW) and spark plugs (Bosch ZR5TPP33) replacement on my 2011 X3 35i. Everything went well even though this is my very first time ! While I had no issues with spark plugs even after 75k miles, I thought I would change them while I am there. Getting P0305 CEL (cylinder 5 misfire) with drive train malfunction warning in vehicle status. Found fuel leaking from feed line 5, loosened and re-tightened it and now no fuel is leaking from that line. However, the P0305 CEL is staying on with car doing rough idling.
Can you please suggest what should I do next ?
1. Switch ignition coils
2. Replace spark plug 5 with a new or old one?
3. Disconnect MAF sensor
4. Any other suggestions
Wish it was any other cylinder other than 5 or 6 ! Now I have to disassemble intake pipes !
Appreciate 0
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