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High Pressure Fuel Pump Repair – BMW B46 Turbo 4 Cylinder Engine
This article gives step-by-step instructions on removing and replacing the high-pressure fuel pump in the BMW B46/B48 4-cylinder turbocharged engine.
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Possible Symptoms: Engine won't start, engine stalls, lack of power when accelerator depressed
This repair can be used on the following BMW models:
Expert level repair.
Step 1 - Purchase Parts
You will need the following parts and supplies to perform this repair.
Step 2 - Repair Procedure
Unless otherwise noted, all vehicle repair step images in this article are copyrighted, and used courtesy of BMW of North America, Inc. .
- You must disconnect the battery before starting this repair. Not disconnecting the battery may cause catastrophic damage to the engine.
1. Disconnect the battery.
Tape a rag around the intelligent battery sensor in the next step to protect it from being damaged. A damaged IBS will cause error codes and electrical malfunctions!
2. Remove the fuel lines.
3. Remove the high pressure fuel pump.
4. Installing a new high pressure fuel pump.
4. Final installation torque values.r-13-51Copyright BMW Repair Guide 2024 - All Rights Reserved