(4) Removal of spark plug
(Refer to the step (3)–6 above.)
(5) Visual inspection of spark plug
Visually inspect the spark plug for electrode wear,
damage in threads or insulation.
Replace the spark plug if it exhibits any damage.
Recommended Spark Plug:
CAUTION:
·
All four spark plugs used for one engine should have
the same heat range and be ones manufactured by the
same manufacturer.
·
Follow the information label in the engine compartment
for selecting the spark plugs. Failure to observe this
caution may cause problems.
MA–16
(6) Inspection of electrode gap
Measure the electrode gap, using a plug gap gauge.
Electrode Gap:
0.9 - 1.0 mm
If the electrode gap of a used spark plug is not within
the specification, replace the spark plug with a new
one.
If the electrode gap of a new spark plug is not within
the specification, adjust the gap by bending the base
of the ground electrode, being careful not to touch the
tip.
(7) Cleaning of spark plug
If the electrode has traces of wet carbon, dry the elec-
trode and clean it with a spark plug cleaner.
Air Pressure:
Not to exceed 588.4 kPa (6 kgf/cm
2
)
Duration of Cleaning:
Not more than 20 seconds.
NOTE:
·
If there is trace of oil, remove it with gasoline before the
spark plug is cleaned by the spark plug cleaner.
(8) Inspection of spark plug insulation resistance
Ensure that the insulation resistance of the spark plug
is more than the specified value.
Minimum Insulation Resistance:
More than 20 M
W
If the insulation resistance is less than the specified
value, replace the spark plug with a new one.
CAUTION:
·
All four spark plugs used for one engine should have
the same heat range and be ones manufactured by the
same manufacturer.
Spark
plug
gap
JMA00040-00000
JMA00041-00032
JMA00042-00033
JMA00043-00034
DENSO
NGK
K20TNR-S
BKUR6EK
K22TNR-S
BKUR7EK
