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 MANUALSLEXUS2004IS 300 BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMIGNITION (SERVICE SPECIFICATIONS)IGNITIONSTORQUE SPECIFICATION
2004 Lexus IS 300 Base, Automatic
Torque Specification
2004 Lexus IS 300 Base, AutomaticSECTION Torque Specification
Torque Specification
| Part tightened | N.m | kgf.cm | ft.lbf |
|---|---|---|---|
| Spark plug x Cylinder head | 18 | 180 | 13 |
| Throttle body x Intake air connector | 21 | 210 | 15 |
| Throttle body bracket x Cylinder head | 21 | 210 | 15 |
| Throttle body bracket x Throttle body | 21 | 210 | 15 |
| Throttle body gasket x Intake air connector | 21 | 210 | 15 |
| Ignition coils and high-tension cord set assembly x Cylinder head | 8.0 | 80 | 71 in..lbf |
| PS pump rear stay x Manifold stay | 39.2 | 400 | 29 |
| PS pump rear stay x PS pump bracket | 39.2 | 400 | 29 |
| Camshaft position sensor x Cylinder head | 9.0 | 90 | 80 in..lbf |
| Crankshaft position sensor x OH pump | 9.0 | 90 | 80 in..lbf |
RENDER: 1.0x
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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.