1992 Lexus SC 400FACTORY OEM SERVICE PROCEDURE

Valve Clearance

VALVE CLEARANCE SPECIFICATIONS

Application (1) In. (mm)
ES300
Intake .005-.009 (.13-.23)
Exhaust .011-.015 (.28-.38)
LS400, SC300 & SC400
Intake .006-.010 (.15-.26)
Exhaust .010-.014 (.26-.36)
(1) Adjust valves with engine cold.
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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