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, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEADJUSTMENTENGINE MECHANICALIGNITION TIMINGINSPECTION
2004 Lexus IS 300 Base, Standard
Ignition Timing: Inspection
2004 Lexus IS 300 Base, StandardSECTION Inspection
- WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
- CHECK IDLE SPEED (See IDLE SPEED )
- CONNECT TIMING LIGHT TO ENGINE
Connect the timing light clip to the black lead wire.
NOTE: Use a timing light that can detect the primary signal.
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.