Chapter 7 Electrical system, Section 2 Ignition system
SPARK PLUG
CARBON DEPOSITS
Check to see if there are carbon deposits on the spark plug.
If carbon is deposited, remove it with a spark plug cleaner
machine or carefully use a tool with a pointed end.
SPARK PLUG GAP
Measure the spark plug gap with a thickness gauge.
If the spark plug gap is out of specification, adjust the gap.
Spark plug gap
0.7 ~ 0.8 mm
(0.028 ~ 0.032 in)
Thickness gauge : 09900-20806
ELECTRODE’S CONDITION
Check to see the worn or burnt condition of the electrodes.
If it is extremely worn or burnt, replace the spark pl
ug.
Replace the spark plug if it has a broken insulator, damaged
thread, etc.
Use recommended spark plug only.
A spark plug of the wrong rating may shorten engine life
and cause loss of performance.
PARK PLUG INSTALLATION
Before tightening the spark plug to the specified torque,
carefully turn the spark plug by fingerinto the threads of
the cylinder head to preventdamage the aluminum
threads.
First, finger tighten the spark plug, and then tighten them to
the specified torque.
Spark plug
: 23N·m (2.3kgf·m)