Spark Plug: Testing and Inspection
REMOVALCAUTION: All spark plugs installed on an engine, must be of the same heat range.
Spark plug: NGK: PFR5B-11
1. #1 SPARK PLUG
1) Disconnect battery ground cable.
2) Disconnect mass air flow sensor connector.
3) Remove four clips securing air cleaner upper cover.
4) Loosen the clamp screw and separate air cleaner upper cover from air Intake duct.
5) Remove air cleaner element and air cleaner case.
6) Remove #1 spark plug cord by pulling boot not cord itself.
7) After connecting (1) spark plug socket (2) extension and (3) Universal Joint to each other securely set them over the spark plug in cylinder head.
8) Cover ABS pipes with rag to prevent damage.
(1) Spark plug socket 16 mm (5/8 in)
(2) Extension
(3) Universal Joint
(4) Extension
(5) Ratchet
NOTE:
- Length L1 is important in making for easy removal.
- It may be necessary to wrap points A and B with vinyl tape to prevent them separating while working.
It they do separate spark plug socket is left on the spark plug and it is very difficult to remove.
- An approximately 250 mm (9.84 in) long extension is recommended to be connected to ratchet.
- For spark plug socket extension and Universal Joint, it is recommended to use the following tools.
Spark plug socket : PROTO 5020-50
Extension : SNAP-ON FX1
Universal Joint : SNAP-ON FU80B
9) Set (4) extension and (5) ratchet in turn onto the connected tools in plug hole and remove spark plug using them.
2. #2 SPARK PLUG
1) Disconnect battery ground cable.
2) Remove battery.
3) Remove #2 spark plug cord by pulling boot not cord itself.
4) For subsequent procedures refer to the procedure for #1 spark plug.
CAUTION: When removing spark plug, cover the ATF cooling pipes with a rag to prevent damage.
3. #3 SPARK PLUG
1) Disconnect battery ground cable.
2) Disconnect mass air flow sensor connector.
3) Remove tour clips securing air cleaner upper cover
4) Loosen the clamp screw and separate air clearer upper cover from air intake duct.
5) Remove air cleaner element and air cleaner case.
6) Remove #3 spark plug cord by pulling boot not cord itself.
4. #4 SPARK PLUG
1) Disconnect battery ground cable.
2) Remove battery.
3) Remove washer tank mounting bolts.
4) Disconnect washer tank connectors.
CAUTION: Do not disconnect washer tank hoses as washer fluid will leak out from washer tank.
5) Move washer tank upward.
6) Remove #4 spark plug cord by pulling boot, not cord itself.
7) For subsequent procedures, refer to the procedure for #1 spark plug.
CAUTION: When removing spark plug, cover the ATF cooling pipes with a rag to prevent damage.
NOTE: For easier removal of spark plug, diagonally insert the tools from the direction of battery stand into plug hole as shown in figure.
INSTALLATION
1. #1 SPARK PLUG
1) After setting spark plug in spark plug socket, connect the spark plug socket, extension and Universal Joint to each other.
2) Screw spark plug into cylinder head using the connected tools above mentioned. At this point, it is necessary to support the rear end of the tools with fingertips.
3) When spark plug is screwed in two or three turns, temporarily disconnect the tools connected in step 1) above.
4) Confirm that spark plug is screwed into the cylinder head properly by touching it with finger. If it is difficult to reach it by hand, confirm its condition by using mirror and suchlike.
5) Cover ABS pipes with rag to prevent damage.
6) Re-insert the tools disconnected in step 3) into plug hole, and set them again over the spark plug.
7) Set extension and ratchet in turn onto the connected tools in plug hole, and tighten spark plug to the specified torque.
Tightening torque (spark plug): 20.6±2.9 Nm (15.19±2.14 ft-lb)
CAUTION: The above torque should be only applied to new spark plugs without oil on their threads. In case their threads are lubricated, the torque should be reduced by approximately 113 of the specified torque in order to avoid over-stressing.
8) The subsequent procedures are in reverse order of #1 spark plug removal.
2. #2 SPARK PLUG
CAUTION: When installing spark plug, cover the ATF cooling pipes with a rag to prevent damage.
1) Carry out steps 1), 2), 3), 4), 6) and 7) of #1 spark plug installation procedure.
2) Proceed in reverse order of #2 spark plug removal.
3. #3 SPARK PLUG
1) Carry out steps 1) through 7) of #1 spark plug installation procedure.
2) Proceed in reverse order of #3 spark plug removal.
4. #4 SPARK PLUG
CAUTION: When installing spark plug, cover the ATF cooling pipes with a rag to prevent damage.
1) Carry out steps 1), 2), 3), 4), 6) and 7) of #1 spark plug installation procedure.
2) Proceed in reverse order of #4 spark plug removal.