## Spark Plug Inspection - L15A5 (FO model)

## L15A5 engine (FO model)

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

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): | 1.2-1.3 mm (0.042-0.051 in.)

3. | Replace the plug at the specified interval, or if the center electrode is rounded (A). Use only the spark plugs as listed.
Spark Plugs
NGK: | IZFR6K13
DENSO: | SKJ20DR-M13

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).