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 MANUALSLEXUS1998SC 300REPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSTORQUE SPECIFICATIONSGS300 & SC300
1998 Lexus SC 300
GS300 & SC300
1998 Lexus SC 300SECTION GS300 & SC300
TORQUE SPECIFICATIONS (GS300 & SC300)
| Application | Ft. Lbs. (N.m) |
|---|---|
| Air Intake Connector Bolt/Nut | 15 (20) |
| EGR Pipe Bolt | 15 (20) |
| EGR Pipe Union Nut | 47 (64) |
| Intake Air Connector-To-Intake Air Chamber Bolts/Nuts | 21 (28) |
| Spark Plug | 13 (18) |
| Throttle Body Bracket-To-Cylinder Head Nuts | 15 (20) |
| INCH Lbs. (N.m) | |
| Cylinder Head Cover Bolt/Nut | 74 (8.4) |
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.