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.

Click here

PROCEDURE

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY

Click here

2. REMOVE IGNITION COIL ASSEMBLY

Click here

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.

Click here

PROCEDURE

1. INSTALL SPARK PLUG

HINT:

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

Click here

(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

Click here

3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

Click here

4. PERFORM INITIALIZATION

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

Click here

READ NEXT:

 A25a-fxs Air Cleaner Filter Element

Components COMPONENTS ILLUSTRATION *1 AIR CLEANER CAP SUB-ASSEMBLY *2 AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Removal REMOVAL PROCEDURE

 A25a-fxs Auxiliary Battery

 Components

COMPONENTS ILLUSTRATION *1 AUXILIARY BATTERY *2 BATTERY HOSE *3 NEGATIVE AUXILIARY BATTERY TERMINAL *4

SEE MORE:

 A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 Circuit Current Above Threshold (P227019,P227118)

DESCRIPTION Refer to DTC P003612. Click here HINT: Although the DTC title say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 2). DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P227019 A/F (O2) Sensor Signal Biased/Stuck Lean Bank

 Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect

© 2016-2026 Copyright www.lexguide.net