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.
2017 Subaru WRX STIFACTORY OEM SERVICE PROCEDURE
Pressure Regulator & Damper Assembly: Assembly
- Install the pressure regulator to the fuel holder assembly, and install the fuel pipe gasket and pulsation damper to the fuel holder assembly.NOTE:
- Use new O-rings and fuel pipe gaskets.
- Apply a thin coat of engine oil to the pressure regulator installation hole of fuel holder assembly.
Tightening torque:
T1: 6.4 N.m (0.7 kgf-m, 4.7 ft-lb)
T2: 21.6 N.m (2.2 kgf-m, 15.9 ft-lb)
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.