Honda Civic Service Manual page 1583

1. Inspect the electrodes and ceramic insulator for:
Spark Plug lnspection
Cracked
insulator
2.
[
. t.p,op", grp
|
. O i l - f o u l i n g
i
. Carbon deposits
|
. Cracked center
I electrode insulator
Burned or worn electrodes may be causecl by:
. A d v a n c e d i g n i t i o n t i m i n g
. Loose spark plug
. Plug heat range too low
. Insufficient cooling
F o u l e d p l u g s m a y b e c a u s e d b Y :
. R e t a r d e d i g n i t i o n t i m a n g
. O i l i n c o m b u s t i o n c h a m b e r
. I n c o r r e c t s p a r k p l u g g a p
. P l u g h e a t r a n g e t o o h i g h
. E x c e s s i v e i d l i n g / l o w s p e e d r u n n i n g
. 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 coil or ignition wares
D 1 6 Y 5 , D 1 6 Y 7 , D ' 1 6 Y 8 e n g i n e l
. Adjust the gap with a suitable gapping tool, and
replace the plug il the center electrode is round-
ed as shown below.
Electrode Gap:
1 . 1 m m
{o.{X:l in)
ROUNDED
ELECTRODE
S t a n d a r d
1 . 1 r 8 ' m m ( 0 . 0 4 3 i 8 0 0 o i n )
Worn or detormed
1 T
23-111
3 .
8 1 6 A 2 e n g i n e :
. D o n o t a d j u s t t h e g a p o f a p l a t i n u m t i p p l u g ;
replace the spark plug il the center electrode is
rounded or it the gap is not within the specifica
t r o n s .
Electlode Gap:
S t a n d a r d
1 . 3 1 8 1 m m ( 0 . 0 5 1 ! 3 o o " i n )
flOUNDED ELECTROOE
',/
@_
:
Platinum tip
NOTE: Use only the spark plugs listed below
4 .
A p p l y a s m a l l q u a n t i t y o f a n t i s e i z e c o m p o u n d t o
the plug threads, and screw the plugs into the cylin
der head finger-tight. Then torque them to 18 N m
1 1 . 8 k g f . m , 1 3 l b n f t ) .
Engine Types
Spark Plugs
D 1 6 Y 5
Z F R 4 F 1 1 ( N G K )
K J 1 4 C R - 1 1 1
( D E N S O i
D 1 6 Y 7 ,
D,I6Y8
Z F R S F - 1 1 ( N G K )
K J 1 6 C R - 1 1 1 ( D E N S O )
8 1 6 4 2
P F R 6 L . 1 3 ( N G K )
P K 2 O P R . L 1 3
( D E N S O }