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.
Fuel Pressure
Relieve fuel system pressure. Connect fuel pressure gauge in fuel system after fuel pressure regulator. Check fuel pressure at engine idle with fuel pressure regulator vacuum hose connected and disconnected. See FUEL PUMP PRESSURE SPECIFICATIONS table. Fuel system residual pressure should be 21 psi (1.5 kg/cm2 ) for 5 minutes on all models.
| Application | No Vacuum: psi (kg/cm2 ) | Vacuum: psi (kg/cm2 ) |
|---|---|---|
| Camry, Celica (3S-FE), Pickup & 4Runner (22-RE & V6) | 38-44 | 33-37 |
| Celica (3S-GE & All-Trac), Cressida, Pickup & 4Runner | 33-38 | 27-31 |
| Corolla, MR2 & Van | 38-44 | 30-33 |
| Land Cruiser | 37-46 | 33-37 |
| Supra | 33-40 | 23-30 |
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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.
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