Troubleshooting
ll.
Tips and Precautions
Bef ore Troubleshooting
. Check applicable fuses in the appropriate fuse/relay
box.
. Check the battery for damage, state of charge, and
clean and tight connections.
. Check the alternator belt tension.
CAUTION:
. Do not quick-charge a battery unless the battery
ground cable has been disconneqted, otherwise you
will damage the alternator diodes.
. Do not attempt to crank the engine with the battery
ground cable loosely connecled or you will severely
damage the wiling,
Handling Connectois
. Make sure the connectors are clean and have no loose
wire terminals.
. Make sure multiple cavity connectors are packed with
grease (except watertight connectors)
. All connectors have push-down release type locks.
Some connectors have a clip on their side used to
attach them to a mount bracket on the body or on
another component. This clip has a pulltype lock.
Some mounted connectors cannot be disconnected
unless you first release the lock and remove the con-
nector from its mount bracket.
LOCKINGPAWL ONOTHERHALF OFCONNECTOR
Pull todrsengage
LOCKING TAB
BRACKET
Never try to disconnect connectors by pulling on
their wires; pull on the connector halves instead
Alwavs reinstall plastic covers.
Before connectang connectors,
nals are in place and not bent.
make sure the terml-
. Check for loose retainer and rubber seals.
RETAINER
The backs of some connectors are packed with
grease. Add grease if necessary. lf the grease is con-
taminated, replace it.
(cont'd)
23-3
1. Inspect the electrodes and ceramic insulator for:
Spark Plug lnspection
Crackedinsulator
2.
[ . t.p,op", grp
| . Oil-fouling
i . Carbon deposits
| . Cracked center
I electrode insulator
Burned or worn electrodes may be causecl by:
. Advanced ignition timing
. Loose spark plug
. Plug heat range too low
. Insufficient cooling
Fouled plugs may be caused bY:
. Retarded ignition timang
. Oil in combustion chamber
. Incorrect spark plug gap
. Plug heat rangetoo high
. Excessive idling/low speed running
. Clogged air cleaner element
. Deteriorated ignition coil or ignition wares
D16Y5, D16Y7, D'16Y8 enginel
. 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 mm
{o.{X:l in)ROUNDEDELECTRODE
Standard 1.1r8 ' mm (0.043i800oin)
Worn or detormed
1T
23-111
3. 816A2 engine:
. Do not adjust the gap of a platinum tip plug;
replace the spark plug il the center electrode is
rounded or it the gap is not within the specifica
tro ns.
Electlode Gap:
Standard 1.3181mm (0.051 !3oo" in)
flOUNDED ELECTROOE
',/
@_
:
Platinum tip
NOTE: Use only the spark plugs listed below
4. Apply a small quantity of anti seize compound to
the plug threads, and screw the plugs into the cylin
der head finger-tight. Then torque them to 18 N m
11.8 kgf.m, 13lbnft).
Engine TypesSpark Plugs
D16Y5ZFR4F 11 (NGK)
KJ14CR-111 (DENSOi
D16Y7,
D,I6Y8
ZFRSF-11 (NGK)
KJ16CR-111(DENSO)
81642PFR6L.13 (NGK)
PK2OPR.L13 (DENSO}
