Toyota 3S-GE Repair Manual page 429

IG-9
IGNITION SYSTEM — ON—VEHlCLE INSPECTION
( K 11- "
2.
Megger
W
%l
I - I
I
e
\ -/
Ground 190147
'\-._,,av/
£1?
§%/
4'!K§
- (W
£0/1'1/7 5
,.,/ / M O
9°
\
Iv
\
sst
as
0'
lOOII—°l
SPARK PLUGS INSPECTION
NOTICE:
I Never use a wire brush for cleaning.
I Never attempt to adjust the electrode gap on a used
spark plug.
I Spark plugs should be replaced every 100.000 km
(60,000 miles).
DISCONNECT HlGH—TENSlON CORDS FROM
SPARK PLUGS
INSPECT ELECTRODE
Using a megger (insulation resistance meter), measure
the insulation resistance.
Standard correct insulation resistance:
10 MQ or more
If the resistance is less than specified, proceed to step
3.
HINT: If a megger is not available, the following simple
method of inspection provides fairly accurate results.
Simple Method:
(a) Quickly race the engine to 4,000 rpm 5 times.
Remove the spark plug. (See step 3)
(c) Visually check the spark plug.
If the electrode is dry OK
If the electrode is wet Proceed to step 4
Reinstall the spark plug. (See step 7)
REMOVE SPARK PLUGS
Using SST, remove the 4 spark plugs.
SST 09155-16100
4. VISUALLY INSPECT SPARK PLUGS
Check the spark plug for thread damage and insulator
damage.
If abnormal, replace the spark plug.
Recommended spark plug:
ND
PK20R8
NGK
W5, BKR6EP—8