This article is AI free. It contains original content, and was researched and written by our own staff at the BMW Repair Guide. For more information on our AI Free Zone, please click here.
Affiliate link disclosure – The BMW Repair Guide uses affiliate links in their site. For more information on affiliate links, please click here.
Fuel Pressure Test – BMW B46/B48 Turbo 4-cylinder Engine
This repair gives step-by-step instructions on performing a low-pressure fuel test on the B46/B48 4-cylinder turbocharged engine. A low-pressure fuel test is necessary when trying to diagnose a faulty fuel pump or clogged fuel filter.
Not sure which engine you have in your BMW? Use our engine finder tool to easily identify it!
Possible Symptoms: Not applicable for this repair.
This repair can be used on the following BMW models:
Intermediate 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. .
- A small amount of fuel will be discharged during this procedure. Have rags ready
You must have a fuel pressure test kit to perform this repair. Please see our special tools block above to order one.
1. Test fuel pressure.r-13-31Copyright BMW Repair Guide 2023 - All Rights Reserved