Did you check valve lash? Next, put a little oil down the plug hole. Do a compression check. Does it go up? Oh, air intake should maxed out. Remove the throttle body or another intake hose. On older engines, flooring the pedal would open the throttle body. Can't do it on an electric TB. Or does BMW have a flooding clear option by flooring the pedal?

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'06 X5 3.0i - bought @143,123 miles (12/26/20)