Platinum-tipped spark plugs
It is not necessary to replace platinum-tipped
spark plugs as frequently as conventional type
spark plugs because they last much longer. Fol-
low the maintenance schedule, but do not reuse
the spark plugs by cleaning or regapping.
cAlways replace spark plugs with recom-
mended or equivalent ones.
1. Remove the engine cover.
2. Disconnect the ignition coil connectors. Re-
move the ignition coil bolts.
3. Disconnect the spark plug cables from the
spark plugs.When disconnecting, always hold
the boots — not the cables. Mark all
cables to identify their original loca-
tions.
4. Remove the spark plugs with a spark plug
socket.
The plug socket has a rubber seal that holds
the spark plug so it does not fall when it is
pulled out. Make sure each spark plug is
snugly fitted into the spark plug socket.
5. Fit the new plugs, one at a time, into the
spark plug socket and install them.Use
only the specified spark plugs.Turn
each plug several full turns by hand, then
tighten with the spark plug socket to the
correct torque. Do not overtighten.
Spark plug tightening torque:
14 - 22 ft-lb (20 - 29 N·m)
6. Holding the boot, reconnect each high ten-
sion cable to its proper spark plug by push-
ing it on until you feel a snap.
7. Iinstall the ignition coil bolts.
Ignition coil bolt tightening torque:
33 - 44 in-lb (3.8 - 5.0 N·m)
Connect the ignition coil connector.
8. Install the engine cover.The air cleaner filter should not be cleaned and
reused. Replace it according to the maintenance
intervals shown in the “NISSAN Service and
Maintenance Guide.” When replacing the filter,
wipe the inside of the air cleaner filter housing
and the cover with a damp cloth.
WDI0005ADI0631
AIR CLEANER
8-24Maintenance and do-it-yourself
ZREVIEW COPY:Ð2003 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
12/20/02Ðcathy
X
