Honda Accord ESM 2003 · Service Manual Service Manual 2003

Spark Plug Inspection (K24A3)

Spark Plug Inspection

K24A3 engine


1.Inspect the electrodes and ceramic insulator.

Burned or worn electrodes may be caused by:


  • Advanced ignition timing
  • Loose spark plug
  • Plug heat range too hot
  • Insufficient cooling

Fouled plug may be caused by:


  • 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

S80WA91A26100055901MAAD01· Improper gap
· Oil-fouling
· Carbon deposits
· Cracked center
electrode insulatorWorn or deformed
electrodesDamaged
gasketCracked
insulator

2.Do not adjust the gap (A) of iridium tip plugs; replace the spark plug if the gap is out of specification.

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

S9V3A00A26100055901MAAD01A

3.Replace the plug at the specified interval or if the center electrode is rounded (A). Use only the spark plugs listed below.

Spark Plugs:
IZFR6K11 (NGK) 
SKJ20DR-M11 (DENSO) 

S80WA91A26100055901MAAD03A

4.Apply a small quantity 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).