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 MANUALSLEXUS1994SC 300 L6-3.0L (2JZ-GE)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE PRECAUTIONSVEHICLE DAMAGE WARNINGSENGINE AND EXHAUST
1994 Lexus SC 300 L6-3.0L (2JZ-GE)
Engine and Exhaust
1994 Lexus SC 300 L6-3.0L (2JZ-GE)SECTION Engine and Exhaust
CATALYTIC CONVERTERS
On vehicles equipped with catalytic converters, the following conditions must be observed:
- Use only "UNLEADED FUEL".
- Avoid running out of fuel.
- In case of poor engine operation (misfiring), avoid driving the vehicle and correct the problem as soon as possible.
- Do not disconnect any spark plug wires with the engine running.
- Avoid push starting the vehicle.
- If running on a dynamometer, make sure the catalytic converter is well ventilated.
- To prevent burns, use caution when working near the catalytic converter.
OXYGEN SENSORS AND SILICONE
To avoid damaging the sensor, do not use silicone based products on an oxygen sensor equipped vehicle.
COMPRESSION TESTING
When performing a compression test, remove the fuel pump relay fuse and disconnect power to the ignition. This will stop fuel flow to the injectors and prevent engine from starting.
On vehicles equipped with catalytic converters, the following conditions must be observed:
- Use only "UNLEADED FUEL".
- Avoid running out of fuel.
- In case of poor engine operation (misfiring), avoid driving the vehicle and correct the problem as soon as possible.
- Do not disconnect any spark plug wires with the engine running.
- Avoid push starting the vehicle.
- If running on a dynamometer, make sure the catalytic converter is well ventilated.
- To prevent burns, use caution when working near the catalytic converter.
OXYGEN SENSORS AND SILICONE
To avoid damaging the sensor, do not use silicone based products on an oxygen sensor equipped vehicle.
COMPRESSION TESTING
When performing a compression test, remove the fuel pump relay fuse and disconnect power to the ignition. This will stop fuel flow to the injectors and prevent engine from starting.
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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.