BMW E30 Fuel System Technical Articles

BMW e30 has fuel injection system. Fuel system components cover everything that is needed to store and deliver fuel - from gas tank to air filter and fuel injectors, and everything in between. Two types were predominately used - Bosch Motronic and L-Jetronic. Bosch Motronic cars are equiped with either M1.0, M1.1, M1.3, or M1.7 .
This DIY writeups will help you troubleshoot and repair bmw e30 fuel system.

Motronic Fault Codes

Bosch Motronic DME fault codes for BMW e30 models. Table includes error code numbers and flash code descriptions, and covers all 325, 325i, 325is, 325ic, 325ix, 318is, and 318ic models that have M1.1, M1.3 and M1.7 control units.

Fuel Filter Change

BMW E30 Fuel Filter replacement procedure. Information is illustrated with pictures.

FPR Replacement

BMW E30 Fuel Pressure Regulator FPR replacement procedure on M20 engine.

O2 Sensor Replacement

BMW E30 - This is the information you need to replace faulty oxygen sensor with a Bosch O2 sensor from a Ford Mustang.