BMW 740iL loss of power with oil pressure light on and excessive white smoke on startup on BMW 740iL

Some BMW 740iL owners report experiencing a loss of power, an illuminated oil pressure light, and excessive white smoke on startup. The oil pressure warning light may indicate excessively high oil pressure, which can lead to engine noise or vibration, while low oil pressure poses serious risks of engine damage if not addressed promptly. Potential causes for low oil pressure include failing oil pumps or pressure sensors. Additionally, owners may face power loss due to fuel or air delivery issues, overheating, or turbocharger failures, which trigger mechanisms to reduce power and prevent engine damage. The presence of excessive white smoke at startup, particularly after the vehicle has been idle, could suggest problems with the turbo oil feed line. To mitigate these issues, it is recommended that owners have the oil pressure system checked, investigate fuel or air delivery problems, and inspect the turbo oil feed line for leaks. If symptoms persist, consulting a qualified mechanic or BMW dealership is advisable for a thorough diagnosis and necessary repairs.