Acura 2002 RSX Service Manual page 65

lgnition System
c]
Spark Plug Inspection
1 .
2 .
Inspect the electrodes and ceramic insulator.
Burned or worn electrodes may be caused by:
. Advanced ignition timing
. Loose spark plug
. PIug heat range too hot
. Insufficient cooling
Fouled plug may be caused by:
. Retarded ignition timing
. O i l i n c o m b u s t i o n c h a m b e r
. Incorrect spark plug gap
. PIug heat range too cold
. Excessive idling/low speed running
. C l o g g e d a i r c l e a n e r e l e m e n t
' Deteriorated ignition coils
wom or detormed
electrodes
.lmproper 96p
. Oil-fouling
' Carbon deposits
. Cracked center
6lecirode insulatol
D o n o t a d j u s t t h e g a p o f i r i d i u m t i p p l u g s ( A ) ;
replace the spark plug if the gap is out of
specification.
Electrode Gap:
Standard {New);
1.0 1.1 mm
(0.039 .. 0.0€ in.)
Service Limit: 1.3 mm {0.051 in.l
4-24
3. Replace the plug at the specified interval, or if the
center electrode is rounded (A). Use onlv the spark
plugs listed below.
Spark Plugs:
K20A3 engine: IZFROKll (NGKI
SKJ2ODR-M11
(DENSO)
K20M engine: IFRTG-11K INGK)
IFRTG-11KS
{NGK)
SK22PR-M11
(DENSO)
SK22PR-M11S
(DENSO)
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.
Specified torque:
IFRTG-1 1 KS (NGK}. SK22PR.M1 1S (DENSO):
25N.m (25kgf.m, 18lbf.ft)
Except IFRTG-11KS INGK). SK22PR-Ml lS
{DENSO):
18N.m (1.8k9f.m, 1316lbf'ft)
4.