1989 BMW 750iL Service and Repair Manual

This factory service and repair manual for the 1989 BMW 750iL has one drivetrain to describe and describes it thoroughly: the naturally aspirated 5.0L SOHC V12, gasoline-fueled, in a four-door sedan built in Base trim only. Everything mechanical in the book refers to that engine, with no alternate displacement, no forced induction and no second body style to cross-check. Engine, driveline, chassis and body electrical sections each stand on their own, the specifications, clearances and torque values printed where the procedure calls for them.

Engines covered

• 5.0L V12 — SOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• Base

Known issues on the 1989 750iL. Twelve cylinders mean two of most things, and the sections that see the heaviest use reflect that: ignition and fuel components duplicated per bank, a cooling system sized for the heat the engine makes, and an electrical layout that has to serve both halves. This manual sets out the removal and installation order for that work, the measurements deciding what can be reused, the torque values for reassembly, and the wiring diagrams and diagnostic steps for running down an electrical fault in the sedan.