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.
1996 Lexus SC 300 StandardFACTORY OEM SERVICE PROCEDURE
ACIS Vacuum Tank
Disconnect vacuum hoses from vacuum tank. Vacuum tank is located on bottom of air intake chamber. See Figure and Fig 2. Replace vacuum tank if it does not operate as follows:
- Blow air through port "B". See Fig 2. Air should flow out of port "A".
- Blow air through port "A". Air should not flow out of port "B".
- Plug port "B". At port "A", apply 16 in. Hg. Vacuum should hold for at least one minute.
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.