Honda Civic manuals

Honda Civic Service Manual: Spark Plug Inspection (K24Z7)

Honda Civic Service Manual / Powertrain / Engine / Ignition System / Spark Plug Inspection (K24Z7)

Removal

1. Wiper Arm Assembly


NOTE: Set the wiper arms to the auto-stop position before removal.


1.

Remove the cowl top wiper covers (A).


2.

Remove the wiper arms (B).


2. Both Side Cowl Covers


1.

Remove the side cowl cover (A).


2.

The left side is shown; repeat on the right side.


3. Center Cowl Cover


1.

Remove the center cowl cover (A).


2.

Disconnect the windshield washer tube (B).


3.

If necessary, remove the hood rear seal (C).


4. Under Cowl Panel

1.

Remove the under cowl panel (A).


5. Ignition Coil Cover

1.

Remove the ignition coil cover.


6. Ignition Coil

1.

Remove the ignition coils.


7. Spark Plug

1.

Remove the spark plugs.


Inspection

1. Spark Plug - Inspection

wan:avla:1

1.

Inspect the electrodes and the ceramic insulator.


Burned or worn electrodes may be caused by these conditions:


Advanced ignition timing

Loose spark plug

Plug heat range too hot

Insufficient cooling


Fouled plugs may be caused by these conditions:


Retarded ignition timing

Oil in combustion chamber

Incorrect spark plug gap

Plug heat range too cold

Excessive idling/low speed running

Clogged air cleaner element

Deteriorated ignition coils


2.

Replace the plug at the specified interval, or if the center electrode (A) is rounded, or if the spark plug gap (B) is out of specification, or if the spark plug electrode is dirty or contaminated. Use only the spark plugs listed.


NOTE:

Do not adjust the gap of iridium tip plugs.

Do not use a plug cleaner.


Spark Plugs

NGK:

ILZKR7B-11S

DENSO:

SXU22HCR11S

Electrode Gap

Standard (New):

1.0-1.1 mm (0.039-0.043 in)


Installation

1. Spark Plug

1.

Apply a small amount of anti-seize compound to the plug threads, and screw the plugs into the cylinder head, finger tight, then tighten the plugs to the specified torque.


Specified Torque:

18 N·m (1.8 kgf·m, 13 lbf·ft)


2. Ignition Coil

1.

Install the ignition coils.


3. Ignition Coil Cover

1.

Install the ignition coil cover.


4. Under Cowl Panel

22mm)2222

1.

Install the under cowl panel (A).


5. Center Cowl Cover


1.

If necessary, install the hood rear seal (A).


2.

Connect the windshield washer tube (B).


3.

Install the center cowl cover (C).


6. Both Side Cowl Covers


1.

Install the side cowl cover (A).


2.

The left side is shown; repeat on the right side.


7. Wiper Arm Assembly

1.122


NOTE: Set the wiper arms to the auto-stop position before installation.


1.

Install the wiper arms (A).


2.

Install the cowl top wiper covers (B).


Ignition System
...

Spark Plug Inspection (R18A9)
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See also:

Honda Civic Service Manual. Valve Guide Replacement (R18Z1)
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