At the moment you dont have a code for them - It comes up as gross leak or small vacuum leak.

At first you need to solve the misfire issue. Did you inspect the spark plugs?

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)