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.
2003 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Service Data
SERVICE DATA SPECIFICATION
| Fuel pressure regulator | Fuel pressure | 304-343kPa (3.1-3.5 kgf/cm2 , 44-50 psi) 147 kPa (1.5 kgf/cm2 , 21 psi) or more |
| Injector | Resistance: at 20°C (68°F) Injection volume Difference between each cylinder Fuel leakage |
13.4-14.2ohm 60-73 cm3 (3.7-4.5 cu in.) per 15 seconds 13 cm3 (0.8 cu in.) or less 1 drop or less per 12 minutes |
| Fuel pump | Resistance: at 20 ° C (68 ° F) | 0.2-3.0 ohm |
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.
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