Combustion misfire cylinder 4

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I covered the Injector connectors so no debris falls inside.Īfter reassembling everything back together I took the car for a test drive. The Valve cover bolts were torqued to 6 ft/lbs. The new spark plugs were properly torqued to 17 ft/lb. I cracked the breather hose (known to brittle easily), but I fixed with marine heatshrink tube. I decided to clean the dirty valve cover with degreaser and water. I have had minor oil leakage through the Valve Cover Gasket which has gotten worse lately, so I decided to replaced the gasket and bought new BOSCH zr5tpp33 spark plugs since I was there already. I have never has any codes or issues or any hiccups whatsoever, and the car now has 127k miles. I upgraded Air Intake Filter, downpipe, and intercooler with stage 2+ MHD at 60k miles. I need your help figuring out my multiple misfire codes on my 2012 135i N55 DCT I came to this forum since I had no luck with one addicts forum

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