oil temperature ACURA CSX 2006 Service Repair Manual

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Engine Electrical
Engine Assembly
Item Measurement QualificationStandard or New Service Limit
Item Measurement Qualification Standard or New
2-2Standards and Service Limits
Ignition coil Rated voltage
12 V
Firingorder 1342
Spark plug Type (K20Z2) DENSO: SKJ20DR-M11
Type (K20Z3) DENSO: SK22PR-M11S
Gap 1.0 1.1 mm (0.039 0.043 in.)
Ignition timing At idle Check the mark M/T (in neutral),
A/T (in N or P)82°BTDC
Drive belt Tension Auto-tensioner
Alternator Output At 13.5 V and
normal engine
temperature 105 A
Coil (rotor) resistance 20 °C (68 °F) 3.2 4.0
Slip ring O.D. 14.4 mm (0.57 in.)14.0 mm (0.55 in.)
Brush length 10.5 mm (0.41 in.)1.5 mm (0.06 in.)
Brush spring tension 3.2 N (0.33 kgf, 0.7 lbf)
Starter Output 1.6 kW
Commutator mica depth 0.40 0.50 mm (0.016 0.020 in.) 0.15 mm (0.006 in.)
Commutator runout 0.02 mm (0.0008 in.) max.0.05 mm (0.002 in.)
Commutator O.D. 28.0 28.1 mm (1.102 1.106 in.) 27.5 mm (1.083 in.)
Brush length 11.1 11.5 mm (0.44 0.45 in.)4.3 mm (0.17 in.)
Compression Pressure Check the engine with the starter
cranking Minimum 930 kPa (9.5 kgf/cm , 135 psi)
Maximum
variation
200 kPa (2.0 kgf/cm , 28 psi)
2
2
red
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Engine Lubrication
Item Measurement QualificationStandard or New Service Limit
2-5
Engine oil Capacity (K20Z2) Engine overhaul 5.3 L (5.6 US qt)
Oil change
including filter 4.2L(4.4USqt)
Oil change
without filter 4.0L(4.2USqt)
Capacity (K20Z3) Engine overhaul 5.5 L (5.8 US qt)
Oil change
including filter 4.4L(4.6USqt)
Oil change
without filter 4.2L(4.4USqt)
Oil pump Inner-to-outer rotor clearance 0.06 0.16 mm (0.002 0.006 in.) 0.20 mm (0.008 in.)
Pump housing-to-outer rotor clearance 0.15 0.21 mm (0.006 0.008 in.) 0.23 mm (0.009 in.)
Pump housing-to-rotor axial clearance 0.035 0.070 mm (0.0014 0.0028 in.) 0.12 mm (0.005 in.)
Balancer shafts, journal diameter No. 1 journal, front shaft19.938 19.950 mm (0.7850 0.7854 in.) 19.92 mm (0.784 in.)
No. 1 journal,
rear shaft 23.938 23.950 mm (0.9424 0.9429 in.) 23.92 mm (0.942 in.)
No. 2 journal,
front and rear
shaft 32.949 32.961 mm (1.2972 1.2977 in.) 32.93 mm (1.296 in.)
Balancer shafts, journal taper 0.005 mm (0.0002 in.) max.
Balancer shafts, end play Front0.063 0.108 mm (0.0025 0.0043 in.) 0.14 mm (0.0055 in.)
Rear 0.063 0.108 mm (0.0025 0.0043 in.) 0.14 mm (0.0055 in.)
Balancer shafts, shaft-to-bearing
clearance No. 1 journal,
front shaft0.050 0.082 mm (0.0020 0.0032 in.) 0.10 mm (0.004 in.)
No. 1 journal,
rear shaft 0.050 0.082 mm (0.0020 0.0032 in.) 0.10 mm (0.004 in.)
No. 2 journal,
front and rear
shaft 0.060 0.120 mm (0.0024 0.0047 in.) 0.15 mm (0.006 in.)
Balancer shaft bearings, I.D. No. 1 journal,
front shaft 20.000 20.020 mm (0.7874 0.7882 in.) 20.03 mm (0.789 in.)
No. 1 journal,
rear shaft 24.000 24.020 mm (0.9449 0.9457 in.) 24.03 mm (0.946 in.)
No. 2 journal,
front and rear
shaft 33.021 33.069 mm (1.3000 1.3019 in.) 33.09 mm (1.303 in.)
Relief valve, oil pressure with oil
temperature at 80 °C (176 °F) At idle
70 kPa (0.7 kgf/cm , 10 psi) min.
At 3,000 rpm 300 kPa (3.1 kgf/cm , 44 psi) min.
2
2
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3-3
K20Z3
Recommended Engine Oil
K20Z2
A
B CDE F
G
K
M
L
N
I
H K
J
M
O Engine oil viscosity for ambient temperature ranges
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")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.
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6-386-38 Cylinder Head
Cylinder Head Cover Installation
(cont’d)
Cylinder Head Removal
B
C
A
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) A
B
8. Install two bolts (A) securing the evaporativeemission (EVAP) canister purge valve bracket.
9. Connect the breather hose (B), and install the dipstick (C).
10. Connect the evaporative emission (EVAP) canister purge valve connector.
11. Install the four ignition coils (see page 4-21).
12. Install the engine cover. NOTE:
 Use fender covers to avoid damaging the painted surfaces.
 To avoid damaging the wire and terminals, unplug the wiring connectors carefully while holding the
connector portion.
 Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 on page 11-3),
and monitor the engine coolant temperature (ECT)
sensor 1. To avoid damaging the cylinder head, wait
until the engine coolant temperature drops below
38 °C (100 °F) before loosening the cylinder head
bolts.
 Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact other wiring or
hoses, or interfere with other parts.
1. Relieve the fuel pressure (see page 11-322).
2. Drain the engine coolant (see page 10-8).
3. Remove the air cleaner assembly (see page 11-345).
4. Remove the drive belt (see page 4-31).
5. Remove the intake manifold:  K20Z2 engine (see page 9-3)
 K20Z3 engine (see page 9-7)
6. Remove the exhaust manifold (see page 9-11).
7. Disconnect the evaporative emission (EVAP) canister hose (A) and the brake booster vacuum
hose (B).
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6-386-38 Cylinder Head
Cylinder Head Cover Installation
(cont’d)
Cylinder Head Removal
B
C
A
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) A
B
8. Install two bolts (A) securing the evaporativeemission (EVAP) canister purge valve bracket.
9. Connect the breather hose (B), and install the dipstick (C).
10. Connect the evaporative emission (EVAP) canister purge valve connector.
11. Install the four ignition coils (see page 4-21).
12. Install the engine cover. NOTE:
 Use fender covers to avoid damaging the painted surfaces.
 To avoid damaging the wire and terminals, unplug the wiring connectors carefully while holding the
connector portion.
 Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 on page 11-3),
and monitor the engine coolant temperature (ECT)
sensor 1. To avoid damaging the cylinder head, wait
until the engine coolant temperature drops below
38 °C (100 °F) before loosening the cylinder head
bolts.
 Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact other wiring or
hoses, or interfere with other parts.
1. Relieve the fuel pressure (see page 11-322).
2. Drain the engine coolant (see page 10-8).
3. Remove the air cleaner assembly (see page 11-345).
4. Remove the drive belt (see page 4-31).
5. Remove the intake manifold:  K20Z2 engine (see page 9-3)
 K20Z3 engine (see page 9-7)
6. Remove the exhaust manifold (see page 9-11).
7. Disconnect the evaporative emission (EVAP) canister hose (A) and the brake booster vacuum
hose (B).
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6-40Cylinder Head
Cylinder Head Removal (cont’d)
B
A
12. Remove the bolt (A) securing the connecting pipe.
13. Disconnect the water bypass hose (B).
14. Disconnect the following engine wire harnessconnectors, and remove the wire harness clamps
from the cylinder head.
 Four fuel injector connectors
 Engine coolant temperature (ECT) sensor 1 connector
 Camshaft position (CMP) sensor A (Intake) connector
 Camshaft position (CMP) sensor B (Exhaust) connector
 Rocker arm oil control valve connector
 Rocker arm oil pressure switch connector
 EVAP canister purge valve connector
 Variable valve timing control (VTC) oil control solenoid valve connector
 Exhaust gas recirculation (EGR) valve connector (K20Z2 engine)
 Engine oil pressure switch connector 15. Remove the cam chain (see page 6-18).
16. Remove the rocker arm assembly:
 K20Z2 engine (see page 6-43)
 K20Z3 engine (see page 6-44)
17. Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a
time. Repeat the sequence until all bolts are
loosened.
18. Remove the cylinder head.
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6-64Cylinder Head
Cylinder Head Installation (cont’d)
B
A
8 x 1.25 mm
22 N·m (2.2 kgf·m, 16 lbf·ft) A
B
A
B
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
12. Install the rocker arm assembly:
 K20Z2 engine (see page 6-60)
 K20Z3 engine (see page 6-61)
13. Install the cam chain (see page 6-21).
14. Connect the following engine wire harness connectors, and install the wire harness clamps to
the cylinder head:
 Four fuel injector connectors
 Engine coolant temperature (ECT) sensor 1 connector
 Camshaft position (CMP) sensor A (Intake) connector
 Camshaft position (CMP) sensor B (Exhaust) connector
 Rocker arm oil control valve connector
 Rocker arm oil pressure switch connector
 EVAP canister purge valve connector
 Variable valve timing control (VTC) oil control solenoid valve connector
 Exhaust gas recirculation (EGR) valve connector (K20Z2 engine)
 Engine oil pressure switch connector
15. Install the bolt (A) securing the connecting pipe.
16. Connect the water bypass hose (B). 17. Connect the upper radiator hose (A) and the heater
hoses (B).
18. Install the harness holder bracket (A), then install the harness holder (B).
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Oil Seal Installed Height: 0.2 1.2 mm
(0.001 0.047 in.)
7-28Engine Block
Crankshaft Installation (cont’d)
0.2 1.2 mm
(0.001 0.047 in.)
BA
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
25. Measure the distance between the engine block (A) and the crankshaft oil seal (B).
26. Install the baffle plates. 27. Install the oil pump (see page 8-21).
28. Install the oil pan (see page 7-29).
29. Install the cylinder head (see page 6-62).
30. M/T model: Install the flywheel (see page 12-21),
the clutch disc (see page 12-23), and the pressure
plate (see page 12-23).
31. A/T model: Install the drive plate (see page 14-242).
32. Install the transmission:  Manual transmission (see page 13-14)
 Automatic transmission (see page 14-242)
33. Install the engine assembly (see page 5-13). NOTE: Whenever any crankshaft or connecting rod
bearing is replaced, it is necessary after
reassembly to run the engine at idle speed until it
reaches normal operating temperature, then
continue to running it for about 15 minutes.
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Engine Oil Temperature: 80 °C (176 °F)
Engine Oil Pressure:
At Idle: 70 kPa (0.7 kgf/cm , 10 psi) min.
At 3,000 rpm: 300 kPa (3.1 kgf/cm , 44 psi) min.
K20Z2 engine
Capacity
AtOilChange:4.0L(4.2USqt)
At Oil Change including Filter: 4.2 L (4.4 US qt)
After Engine Overhaul: 5.3 L (5.6 US qt)
K20Z3 engine
Capacity
AtOilChange:4.2L(4.4USqt)
At Oil Change including Filter: 4.4 L (4.6 US qt)
After Engine Overhaul: 5.5 L (5.8 US qt)
2
2
8-108-10Engine Lubrication
Oil Pressure Test
Engine Oil Replacement
A A
39 N·m
(4.0 kgf·m, 29 lbf·ft)
B
NOTE: If the oil pressure warning indicator stays on
with the engine running, check the engine oil l
evel. If
the oil level is correct do the following test:
1. With the engine stopped, remove the oil pressure switch (see page 8-9), then install an oil pressure
gauge (A).
2. Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem
before continuing.
3. Allow the engine to reach operating temperature (fan comes on at least twice). The pressure should
be:
4. If the oil pressure is out of specifications, inspect these items:
 Blocking of oil filter (see page 8-11).
 Blocking of oil screen.
 Inspect the oil pressure relief valve (see page 8-15).
 Inspect the oil pump (see page 8-17). 1. Warm up the engine.
2. Remove the drain bolt (A), and drain the engine oil.
3. Reinstall the drain bolt with a new washer (B).
4. Refill the engine with the recommended oil
(see page 3-2).
Do not overtighten.
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