Honda Civic. Manual — part 783

3. Replace the plug at the specified interval, or if the center electrode is rounded

(A), or if the spark plug gap (B) is out of specification. Use only the listed
spark plugs.

Spark Plugs

NGK: IFR7G11KS

DENSO: SK22PR-M11S

Electrode Gap

Standard (New): 1.0-1.1 mm (0.039-0.043 in.)

Fig. 12: Identifying Spark Plug Gap
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Apply small amount of anti-seize compound to the plug threads, and screw the

plugs into the cylinder head, finger-tight. Then torque them to 18 N.m (1.8
kgf.m, 13 lbf.ft).

When using a sand blaster spark plug cleaner, do
not clean for more than 20 seconds to avoid
damaging the electrode.

NOTE:

Do not adjust the gap of iridium tip plugs.

2008 Honda Civic EX

2006-08 ENGINE Ignition System (K20Z3) - Civic (Except Si)

2006-08 ENGINE

Ignition System (R18A1) - Civic (All Except Hybrid)

COMPONENT LOCATION INDEX

NOTE:

Go to IGNITION SYSTEM (GX) (SUPPLEMENT) article for
additional information for the GX model.

2008 Honda Civic EX

2006-08 ENGINE Ignition System (R18A1) - Civic (All Except Hybrid)

2008 Honda Civic EX

2006-08 ENGINE Ignition System (R18A1) - Civic (All Except Hybrid)

Fig. 1: Identifying Ignition System Component
Courtesy of AMERICAN HONDA MOTOR CO., INC.

CIRCUIT DIAGRAM

2008 Honda Civic EX

2006-08 ENGINE Ignition System (R18A1) - Civic (All Except Hybrid)

Fig. 2: Ignition System - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

IGNITION TIMING INSPECTION

2008 Honda Civic EX

2006-08 ENGINE Ignition System (R18A1) - Civic (All Except Hybrid)