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.
1994 Lexus SC 400FACTORY OEM SERVICE PROCEDURE
Fuel System: Notes
NOTE:
Fuel pump performance measures fuel pressure and volume availability, not regulated fuel pressure.
FUEL PUMP PERFORMANCE (1)
| Application | Pressure: psi (kg/cm2 ) | Min. Vol. @ 30 Sec.: Pts. (L) | ||||
|---|---|---|---|---|---|---|
| SC400 | 38-44 (2.7-3.1) | (2) * | ||||
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REGULATED FUEL PRESSURE (1)
| Application | psi (kg/cm2 ) | ||
|---|---|---|---|
| SC400 | 28-34 (2.0-2.4) | ||
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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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