Article by: Paul Axford Applies to: all BMW models with the M30 engine (this article was written with a 730i). This initially looks like a formidable job but once you get the splash guard off the lower-front engine area it’s really very simple. Not so simple is getting the correct […]
Topic: Engine
Checking the M30 Engine Sensors
Article by: Paul Axford Applies to: All models with the M30 big six engine (this article was written with a 730i). Note: some variations exist with early renditions installed in e9 and e12 models. The photo below indicates where some of these sensors are located. a) Cleaning the high-tension ignition […]
Cleaning the Air Flow Meter Potentiometer
Article by: Paul Axford Applies to: all models with the vane style air flow meter (this article was written with a 730i). The AFM is an early-80’s relic from the second generation of electronic fuel injection. This massive sensor sitting dead-center on top of the engine does two things – […]
Engine Mount Replacement M30 (I6)
Article by: Paul Axford Applies to: all models with the M30 big six engine (this article was written with a 730i). A vibration felt through the steering while starting the car was my cue that the engine mounts had failed. The replacement procedure involves raising the engine about 5 cm […]
Reconditioning M70 Throttle Bodies
Article by: G. Bowers Article applies to: All models with the M70 V12 engine. My 1990 BMW 750il was not idling well, and I was starting to get “EML” errors on startup. The “EML” light would stay on when I started the car, and the engine would run in “limp […]
Reconditioning M70 Throttle Bodies
Article by: G. Bowers Article applies to: All models with the M70 V12 engine. My 1990 BMW 750il was not idling well, and I was starting to get “EML” errors on startup. The “EML” light would stay on when I started the car, and the engine would run in “limp […]
