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How to Change Lexus LS400 spark plugs


Description

How to Change Lexus LS400 spark plugs

A guide for first timers showing how to replace spark plugs on a later LS400

Just a note to amend my own experience. Please read:

I discovered/read a Lexus manual on this and there is a step to applying electrolyte grease to the spark plug threads. Next time I will do this. I have amended the guide - some manufacturers specify no grease and views seem to be divided - but if Lexus specify it in their servicing and tech guides then that's what it is.

There was certainly no sign of grease on removing my plugs...Lexus service history to the then 72k Miles.

Changing LS 400 Spark PlugsRevised2020.pdf

Field Notes Lexus LS400 Year2000 cambelt change.compressed.pdf


Extra Fields

General

  • Time Taken?
    1-2 hours
  • Tools Used?
    Small torque wrench, extension bars, plug socket
  • List Parts Used?
    Spark Plugs
  • Costs?
    £55-£75
  • Difficulty Level? 1-5
    1
  • Like 1

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Just a note to amend my own experience.

I discovered/read a Lexus manual on this and one step is applying electrolyte grease to the spark plug threads. Next time I will do this.

There was certainly no sign of this on removing my plugs...Lexus service history to the then 72k Miles.

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