Lexus ES manuals

Lexus ES: A25a-fks Spark Plug

Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during spark plug removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

  • Replacement of ignition coil assembly
  • Replacement of spark plug

Inspection after repair

  • Poor idle, etc.
  • Engine start function, etc.

NOTICE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

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PROCEDURE

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY

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2. REMOVE IGNITION COIL ASSEMBLY

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3. REMOVE SPARK PLUG

(a) Remove the 4 spark plugs from the cylinder head sub-assembly.

NOTICE:

If a spark plug has been struck or dropped, replace it.

HINT:

Arrange the removed parts in the correct order.

Installation

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

This procedure includes the installation of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

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PROCEDURE

1. INSTALL SPARK PLUG

HINT:

Perform "Inspection After Repair" after replacing a spark plug.

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(a) Install the 4 spark plugs to the cylinder head sub-assembly.

Torque:

20 N·m {204 kgf·cm, 15 ft·lbf}

NOTICE:

If a spark plug has been struck or dropped, replace it.

HINT:

Install the same parts to their original positions.

2. INSTALL IGNITION COIL ASSEMBLY

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3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

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4. PERFORM INITIALIZATION

(a) Perform "Inspection After Repair" after replacing an ignition coil assembly or spark plug.

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