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.
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HOMESERVICE MANUALSSUBARU1991JUSTY GL, 2D HATCHBACK, 1.2 7, AUTOMATIC CVTREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - BASIC TESTINGFUEL PRESSURE CHECKFUEL-INJECTED
1991 Subaru Justy GL, 2D Hatchback, 1.2 7, Automatic CVT
Fuel Pressure Check: Fuel-Injected
1991 Subaru Justy GL, 2D Hatchback, 1.2 7, Automatic CVTSECTION Fuel-Injected
- Disconnect fuel pump connector. Crank engine for at least 5 seconds. If engine starts, let it run until it stops. Disconnect fuel hose at pressure regulator and install fuel pressure gauge using "T" fitting.
- Start engine and check fuel pressure at idle. See the REGULATED FUEL PRESSURE table. Ensure fuel pressure increases as engine RPM increases.
REGULATED FUEL PRESSURE
| Application | psi (kg/cm2 ) |
|---|---|
| Justy 1.2L PFI | 41.3 (2.9) |
RENDER: 1.0x
NO RELATED
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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.