Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2020 Subaru Legacy BaseFACTORY OEM SERVICE PROCEDURE

High-Pressure Fuel Pump

Install the fuel pump lifter.
NOTE:
- Apply engine oil to the side of the high-pressure fuel pump case and to the bottom surface of the fuel pump lifter.
- After installing the fuel pump lifter, rotate the crankshaft in order to set the fuel pump lifter to the lowest position.
Courtesy of SUBARU OF AMERICA, INC.
Set a new O-ring, and install the high-pressure fuel pump using TORX PLUS^® 40IP.
Tightening torque:

21 N.m (2.1 kgf-m, 15.5 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Connect the connector.

Courtesy of SUBARU OF AMERICA, INC.
Install the high-pressure fuel delivery pipe. Refer to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>HIGH PRESSURE FUEL DELIVERY PIPE>INSTALLATION>HIGH-PRESSURE FUEL DELIVERY PIPE .
Install the air intake boot. Refer to INTAKE (INDUCTION) (H4DO)>Air Intake Boot>INSTALLATION .
Connect the ground terminal to battery sensor. Refer to REPAIR CONTENTS>NOTE>BATTERY .

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.