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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.
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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
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- 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 2024 - All Rights Reserved