Lexus ES300 (1997 year). Manual - part 482
P20584
IG0152
S05622
Ohmmeter
S04729
Ohmmeter
–
IGNITION
IGNITION SYSTEM
IG–5
976
1997 LEXUS ES300 (RM511U)
(f)
Inspect the electrode gaps.
Maximum electrode gap for used spark plug:
1.3 mm (0.051 in.)
If the gap is greater than maximum, replace the spark plug.
Correct electrode gap for new spark plug:
1.1 mm (0.043 in.)
NOTICE:
If adjusting the gap of a new spark plug, bend only the base
of the ground electrode. Do not touch the tip. Never attempt
to adjust the gap on the used plug.
(g)
Clean the spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then
clean with a spark plug cleaner.
Air pressure: Below 588 kPa (6 kgf/cm
2
, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove it with gasoline before using the
spark plug cleaner.
(h)
Using a 16 mm plug wrench, install the 6 spark plugs to
the RH and LH cylinder heads.
Torque: 18 N·m (180 kgf·cm, 13 ft·lbf)
(i)
Install the ignition coils.
4.
INSPECT IGNITION COILS
(a)
Disconnect the high–tension cords from the ignition coils.
(b)
Disconnect the ignition coil connectors.
(c)
Using an ohmmeter, measure the primary coil resistance
between the positive (+) and negative (–) terminals.
Primary coil resistance:
Cold
0.70 – 0.94
Ω
Hot
0.85 – 1.10
Ω
If the resistance is not as specified, replace the ignition coil.
(d)
Using an ohmmeter, measure the secondary coil resis-
tance between the positive (+) and high–tension terminal.
Secondary coil resistance:
Cold
10.8 – 14.9 k
Ω
Hot
13.1 – 17.5 k
Ω
If the resistance is not as specified, replace the ignition coil.
(e)
Connect the ignition coil connectors.
(f)
Connect the high–tension cords to the ignition coils.