2006 ACURA CSX spark plugs

µµ µµ
µµ µµ
(#')
Number Maintenance Sub Items
3-8
Maintenance Minder
Maintenance Sub Items
1 Rotate tires, and check tire inflation and condition.
Follow the pattern shown in the Owner’s Manual.


2 Replace air cleaner element (see page 11-346).
Replace every 15,000 miles (24,000 km) if the vehicle is driven in dusty conditions.
Replace dust and pollen filter (see page 21-75). If the vehicle is driven mostly in urban areas that have high concentrations of dust, pollen, or soot in
the air, replace every 15,000 miles (24,000 km).
Replace the filter whenever airflow from the heating and air c onditioning system is less than normal.
Inspect drive belt (see page 4-30). Look for cracks and damage, then check the position of the drive belt auto-tensioner indicator.
3 Replace automatic transmission fluid (see page 14-232). Capacity:2.9L(3.1USqt);useAcuraATF-Z1.
Replace manual transmission fluid. 5M/T (see page 13-5), 6M/T (see page 13-82)
Capacity:1.5L(1.6USqt);useAcuraMTF.




4 Replace spark plugs (see page 4-21).
K20Z2: Use SKJ20DR-M11 (DENSO).
K20Z3: Use SK22PR-M11S (DENSO).
Inspect valve clearance (cold). K20Z2 (see page 6-12)
Intake: 0.21 0.25 mm (0.008 0.010 in.), Exhaust: 0.28 0.32 mm (0.011 0.013 in.)
K20Z3 (see page 6-14)
Intake: 0.21 0.25 mm (0.008 0.010 in.), Exhaust: 0.25 0.29 mm (0.010 0.011 in.)


5 Replace engine coolant (see page 10-8).
Capacity (including the reservoir):
K20Z2: M/T 4.3 L (1.14 US gal), A/T 4.2 L (1.11 US gal)
K20Z3: 4.5 L (1.19 US gal)
Use Honda Long Life Antifreeze/Coolant Type 2.
08/08/21 14:08:32 61SNR030_030_0008
ProCarManuals.com
DYNOMITE -2009-

(#')
Symptom Diagnostic procedure Also check for
4-4
Starting System
Symptom Troubleshooting Index


Engine does not start
(does not crank)
1.
2.
3.
4.
5.
6.
7.Check for loose battery terminals or connections.
Test the battery for a low state of charge (see page
22-67).
Check the starter (see page 4-6).
Check the starter cut relay (see page 22-70).
Check the clutch interlock switch (M/T model) (see page
4-8).
Check the transmission range switch (A/T model)
(see page 14-265).
Check the ignition switch or wire (see page 22-72). Poor ground at G101
(A/T model) or G401
(M/T model)
Engine cranks, but does
not start 1.
2.
3.
4.
5.
6.
7.
8.
9.Check for PGM-FI DTCs (see page 11-3).
Check for IMMOBI status and function (see page
22-325).
Check the fuel pressure (see page 11-325).
Check for a plugged or damaged fuel line (see page
11-326).
Check for a plugged fuel filter (see page 11-337).
Check the throttle body (see page 11-
343).
Check for low engine compression (see page 6-7).
Check for a damage or broken cam chain (see page
6-21).
Do the engine control module (ECM)/powertrain control
module (PCM) reset in the PGM-FI INSPECTION menu
to cancel the ALL INJECTORS STOP with the Honda
Diagnostic System (HDS). Empty fuel tank
Weak or fouled spark
plugs
Engine is hard to start 1. 2.
3.
4.Check for PGM-FI DTCs (see page 11-3).
Check the fuel pressure (see page 11-325).
Check for a plugged or damaged fuel line (see page
11-326).
Check for a plugged fuel filter (see page 11-337). Weak or fouled spark
plugs
Engine cranks slowly 1. 2.
3.
4.Check for loose battery terminals or connections.
Test the battery for a low state of charge (see page
22-67).
Check the starter for binding (see page 4-13).
Check for excessive drag in the engine.
08/08/21 14:09:21 61SNR030_040_0005
ProCarManuals.com
DYNOMITE -2009-

Î
(#'
)
4-19
Circuit Diagram
ICM
ICM ICM
ICM: Ignition Conotrol Module BLK BLK BLK
ICM
BLK/WHT BLK/WHT BLK/WHT BLK/WHT
5V
BLU
ECM/PCM
IGPLS4 IGPLS3 IGPLS2 IGPLS1 MRLY BLK/WHT
2 3
1 UNDER-HOOD FUSE/RELAY BOX
1
3 2
4
No. 18 (15 A)
GRN
No. 4 WHT/BLU
No. 3 No. 2 BLU/RED
BATTERY
YEL/GRN
BLK No. 1
BRN
G101G101 IGNITION
COIL
RELAY
IGNITION
COILS
SPARK
PLUGS E7
F9
C18 C17 C16 C15 A6
13 3
1
3
1
2
2
2 23
16
C101
08/08/21 14:09:30 61SNR030_040_0020
ProCarManuals.com
DYNOMITE -2009-

Î
(#'


 )

(#'

")
4-214-21
Ignition Coil Removal/Installation Spark Plug Inspection
A B
C 6x1.0mm
10 N·m (1.0 kgf·m, 7.2 lbf·ft)
6x1.0mm
12 N·m
(1.2 kgf·m,
8.7 lbf·ft) Impropergap
 Oil-fouling
 Carbon deposits
 Cracked centerelectrode insulator
Worn or deformed
electrodes
Damaged
gasket
Cracked
insulator
1. Remove the ignition coil cover (A).
2. Disconnect the ignition coil connectors (B), then remove the ignition coils (C).
3. Install the ignition coils in the reverse order of removal. 1. Remove the spark plugs, then inspect the
electrodes and the ceramic insulator.
 Burned or worn electrodes may be caused by these conditions:
– Advanced ignition timing
– Loose spark plug
– Plug heat range too hot
– Insufficient cooling
 Fouled plugs may be caused by these conditions: – Retarded ignition timing
– Oil in combustion chamber
– Incorrect spark plug gap
– Plug heat range too cold
– Excessive idling/low speed running
– Clogged air cleaner element
– Deteriorated ignition coils
2. If the spark plug electrode is dirty or contaminated, clean the electrode with a plug cleaner.
NOTE: Do not use a wire brush or scrape the iridium electrode since this will damage the electrode.
 When using a sand blaster spark plug cleaner, do not clean for more than 20 seconds to avoid
damaging the electrode.
(cont’d)
08/08/21 14:10:07 61SNR030_040_0022
ProCarManuals.com
DYNOMITE -2009-

µµ
Spark Plugs
K20Z2 engine
DENSO: SKJ20DR-M11
K20Z3 engine
DENSO: SK22PR-M11S
Electrode Gap
Standard(New): 1.0 1.1 mm (0.039 0.043 in.)
4-22 Ignition System
Spark Plug Inspection (cont’d)
B
A
3. Replace the plug at the specified interval or if the
center electrode (A) is rounded, or if the spark plug
gap (B) is out of specification. Use only the listed
spark plugs.
NOTE: Do not adjust the gap of iridium tip plugs.
4. Apply a small amount of anti-seize compound to the plug threads, and screw the plugs into the
cylinder head, finger-tight. Torque them to 18 N·m
(1.8 kgf·m, 13 lbf·ft).
08/08/21 14:10:07 61SNR030_040_0023
ProCarManuals.com
DYNOMITE -2009-


(#'
")Compression Pressure:
Above 930 kPa (9.5 kgf/cm , 135 psi)
Maximum Variation:
Within 200 kPa (2.0 kgf/cm , 28 psi)
2
2
6-7
Engine Compression Inspection
NOTE: After this inspection, you must reset the engine
control module (ECM)/powertrain control module
(PCM), otherwise the ECM/PCM will continue to stop
the fuel injectors from operating. 1. Warm up the engine to normal operating temperature (cooling fan comes on).
2. Turn the ignition switch to LOCK (0).
3. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 on page 11-3).
4. Turn the ignition switch to ON (II).
5. Make sure the HDS communicates with the vehicle and the ECM/PCM. If it does not communicate,
troubleshoot the DLC circuit (see page 11- 204).
6. Select ALL INJECTORS STOP in the PGM-FI, INSPECTION menu with the HDS.
7. Turn the ignition switch to LOCK (0).
8. Remove the four ignition coils (see page 4-21).
9. Remove the four spark plugs.
10. Attach the compression gauge to a spark plug hole. 11. Step on the accelerator pedal to open the throttle
fully, then crank the engine with the starter motor,
and measure the compression.
12. Measure the compression on the remaining cylinders.
13. If the compression is not within specifications, check the following items, then remeasure the
compression.
 Incorrect valve clearance
 Confirmation of cam timing
 Damaged or worn cam lobes
 Damaged or worn valves and seats
 Damaged cylinder head gasket
 Damaged or worn piston rings
 Damaged or worn piston and cylinder bore
14. Remove the compression gauge from the spark plug hole.
15. Install the four spark plugs.
16. Install the four ignition coils (see page 4-21).
17. Select the ECM/PCM reset (see page 11-4) in the PGM-FI INSPECTION menu to cancel ALL
INJECTORS STOP with the HDS.
08/08/21 14:26:27 61SNR030_060_0007
ProCarManuals.com
DYNOMITE -2009-

µ
µ
µ
µ
µ
µ
µ
µ µ
µ
µ
µ
µ
µ
YES
NO
YES
NO
YES
NO YES
NO
YES
NO
YES
NO
11-116
PGM-FI System
DTC Troubleshooting (cont’d)
8. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3
MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Go to step 9.
Intermittent failure, the system is OK at this
time.
9. Turn the ignition switch to LOCK (0).
10. Check the fuel quality.
Go to step 11.
Drain the tank, fill it with a known-good fuel,
then go to step 25.
11. Inspect the spark plugs (see page 4-21). If the spark plugs are fouled or worn, replace them.
12. Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
 ENGINE S PEED
 VSS
 REL TP SENSOR
 CLV (calculated load value)
 APP SENSOR
13. Check the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 MISFIRE, and/or CYL4 MISFIRE in the DATA LIST
for 10 minutes with the HDS.
Go to step 14.
Go to step 25. 14. Check the fuel pressure (see page 11-325).
Go to step 15.
 If the fuel pressure is too high, replace the fuel pressure regulator (see page 11-337), then go to
step 25.
 If the fuel pressure is too low, check the fuel pump, the fuel feed pipe, and the fuel filter. If
they are OK, replace the fuel pressure regulator
(see page 11-337), then go to step 25.
15. Start the engine. Hold the engine speed at 3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
16. Check for these conditions:  Engine coolant temperature (ECT SENSOR 1)above80°C(176°F)
 A/T in P or N, M/T in neutral
 All electrical loads off
17. Monitor the ENGINE SPDEED in the DATA LIST with the HDS, and hold the engine speed at
2,500 rpm. Once the engine speed is met, hold the
accelerator pedal steady for more than 10 seconds.
Repeat step 17.
Go to step 18.
18. While holding the engine speed at 2,500 rpm, check the MAF SENSOR in the DATA LIST with the HDS.
Go to step 19.
Replace the MAF sensor/IAT sensor (see page
11-224), then go to step 25.
Does the CYL1 MISFIRE, CYL2 MISFIRE, CYL3 M I SF I RE , and / or CY L4 M I SF I RE show mi sf i r ecounts?
Is the quality good?
Does the CYL1 MISFIRE, CYL2 MISFIRE, CYL3M I SF I RE , and / or CY L4 M I SF I RE show mi sf i r ecounts? Is the fuel pressure OK?
Di d t he engi ne speed v ar y mor e t han 100 r pm f r om2,500 rpm?
Is t her e about 6.0 8.6 ( K 20Z 2 engi ne) or5.7 8.3 (K 20Z 3 engine) gm/ s?
08/08/21 14:17:24 61SNR030_110_0116
ProCarManuals.com
DYNOMITE -2009-



(#'
")
µ
µ
YES
NO
11-30911-309
Idle Speed Inspection
BRAKE PEDAL POSITION SWITCH
4P CONNECTOR
BKSW
(LT GRN)JUMPER WIRE
ECM/PCM CONNECTOR A (44P) BKSW (LT GRN) A
9. Connect brake pedal position switch 4P connector
terminal No. 2 to body ground with a jumper wire.
10. Check for continuity between ECM/PCM connector terminal A40 and body ground.
Repair open in the wire between the brake
pedal position switch and the No. 12 HORN/STOP
(15 A) fuse. Also, inspect the brake pedal position
switch (see page 19-6).
Repair open in the wire between the ECM/
PCM (A40) and the brake pedal position switch. NOTE:
 Before checking the idle speed, check these items: – The malfunction indicator lamp (MIL) has not been reported on, and there are no DTCs.
– Ignition timing
– Spark plugs
– Air cleaner
– PCV system
 Apply the parking brake, and make sure the headlights are off.
1. Disconnect the evaporative emission (EVAP) canister purge valve connector (see step 5 on page
11-409).
2. Connect the HDS to the data link connector (DLC) (A) located under the driver’s side of the dashboard.
3. Make sure the HDS communicates with the ECM/ PCM. If it doesn’t, go to the DLC circuit
troubleshooting (see page 11-204).
(cont’d)
Wire side of female terminals
Terminal side of female terminals
Is there continuity?
08/08/21 14:29:38 61SNR030_110_0309
ProCarManuals.com
DYNOMITE -2009-