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.
2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
High-Pressure Fuel Pump
CAUTION:
- Be careful not to spill fuel.
- Catch the fuel from the pipes using a container or cloth.
- Disconnect the ground terminal from battery sensor. Refer to NOTE>NOTE>BATTERY .
- Remove the high-pressure fuel delivery pipes. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>HIGH PRESSURE FUEL DELIVERY PIPE>REMOVAL>HIGH-PRESSURE FUEL DELIVERY PIPEÂ .
- Remove the fuel delivery pipe (A) from the high-pressure fuel pump, and disconnect the connector (B) from the high-pressure fuel pump.NOTE: Disconnect the quick connector as shown in the figure.
- Using TORX PLUS® bit 40IP, remove the high-pressure fuel pump.
- Remove the fuel pump lifter from the fuel pump case.
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.