Chain ACURA CSX 2006 Service Service Manual



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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Top Ring Clearance
K20Z2 engine:
Standard (New): 0.035 0.060 mm
(0.0014 0.0024 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.045 0.070 mm (0.0018 0.0028 in.)
Service Limit: 0.13 mm (0.005 in.)
Second Ring Clearance
K20Z2 engine:
Standard (New): 0.030 0.055 mm (0.0012 0.0022 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.040 0.065 mm (0.0016 0.0026 in.)
Service Limit: 0.13 mm (0.005 in.)
If the Crankshaft is Already Installed
7-237-23
Piston Installation
OIL RING GAP About 90 °
SECOND RING GAP
PISTON PIN OIL RING GAPAbout 45 °
TOP RING GAP and
SPACER RING GAP A
A
B
7. After installing a new set of rings, measure the
ring-to-groove clearances:
8. Rotate the rings in their grooves to make sure they do not bind.
9. Position the ring end gaps as shown: 1. Set the crankshaft to bottom dead center (BDC) for
each cylinder as its piston is installed.
2. Remove the connecting rod caps, then install the ring compressor. Check that the bearing is securely
in place.
3. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore, then attach
the ring compressor to the piston/connecting rod
assembly.
4. Position the mark (A) to face the cam chain side of the engine block.
5. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a
hammer (A).
Push down on the ring compressor (B) to prevent
the rings from expanding before entering the
cylinder bore.
6. Stop after the ring compressor pops free, and check the connecting rod-to-rod journal alignment
before pushing the piston into place.
(cont’d)
This illustration shows K20Z2 engine.
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Top Ring Clearance
K20Z2 engine:
Standard (New): 0.035 0.060 mm
(0.0014 0.0024 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.045 0.070 mm (0.0018 0.0028 in.)
Service Limit: 0.13 mm (0.005 in.)
Second Ring Clearance
K20Z2 engine:
Standard (New): 0.030 0.055 mm (0.0012 0.0022 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.040 0.065 mm (0.0016 0.0026 in.)
Service Limit: 0.13 mm (0.005 in.)
If the Crankshaft is Already Installed
7-237-23
Piston Installation
OIL RING GAP About 90 °
SECOND RING GAP
PISTON PIN OIL RING GAPAbout 45 °
TOP RING GAP and
SPACER RING GAP A
A
B
7. After installing a new set of rings, measure the
ring-to-groove clearances:
8. Rotate the rings in their grooves to make sure they do not bind.
9. Position the ring end gaps as shown: 1. Set the crankshaft to bottom dead center (BDC) for
each cylinder as its piston is installed.
2. Remove the connecting rod caps, then install the ring compressor. Check that the bearing is securely
in place.
3. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore, then attach
the ring compressor to the piston/connecting rod
assembly.
4. Position the mark (A) to face the cam chain side of the engine block.
5. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a
hammer (A).
Push down on the ring compressor (B) to prevent
the rings from expanding before entering the
cylinder bore.
6. Stop after the ring compressor pops free, and check the connecting rod-to-rod journal alignment
before pushing the piston into place.
(cont’d)
This illustration shows K20Z2 engine.
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If the Crankshaft is Not Installed
7-24Engine Block
Piston Installation (cont’d)
90 °
A
A
B
7. Check the connecting rod bearing clearance with
plastigage (see page 7-8).
8. Inspect the connecting rod bolts (see page 7-25).
9. Install the rod caps with bearings. Tighten the bolts to 20 N·m (2.0 kgf·m, 14 lbf·ft) (K20Z2 engine) or
29 N·m (3.0 kgf·m, 22 lbf·ft) (K20Z3 engine).
NOTE: Apply new engine oil to the bolt threads and
flanges.
10. Tighten the connecting rod bolts an additional 90 °.
NOTE: Remove the connecting rod bolt if you
tightened it beyond the specified angle, and go
back to step 8 of the procedure. Do not loosen it
back to the specified angle. 1. Remove the connecting rod caps, then install the
ring compressor, and check that the bearing is
securely in place.
2. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore, then attach
the ring compressor to the piston/connecting rod
assembly.
3. Position the mark (A) to face the cam chain side of the engine block.
4. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a
hammer (A).
Push down on the ring compressor (B) to prevent
the rings from expanding before entering the
cylinder bore.
5. Position all pistons at top dead center (TDC).
This illustration shows K20Z2 engine.
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(#') K20Z2 engine
8-3
Component Location Index
OIL PRESSURE SWITCHOIL FILTER
OIL PUMP
DRAIN BOLT
O-RING
OIL PAN
BAFFLE PLATE
OIL CONTROL ORIFICE
OIL PUMP CHAIN GUIDE
CRANKSHAFT SPROCKET
OIL PUMP CHAIN TENSIONER
BAFFLE PLATE OIL FILTER FEED PIPEWASHER
Circuit Diagram, page 8-6
Test, page 8-9
Replacement, page 8-9
Oil Pressure Test, page 8-10 Replacement, page 8-11
Overhaul, page 8-15
Removal, page 7-11
Installation, page 7-29
Replacement, page 8-12
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K20Z3 engine
8-4Engine Lubrication
Component Location Index (cont’d)
OIL PRESSURE SWITCH
OIL FILTER
OIL PUMP
DRAIN BOLT
O-RING OIL PAN
BAFFLE PLATE
OIL CONTROL ORIFICE
OIL PUMP CHAIN GUIDE
CRANKSHAFT SPROCKET OIL PUMP CHAIN TENSIONER
BAFFLE PLATE
OIL COOLERWASHER
OIL COOLER CENTER BOLT OIL JETS
Circuit Diagram, page 8-6
Test, page 8-9
Replacement, page 8-9
Oil Pressure Test, page 8-10 Replacement, page 8-11
Overhaul, page 8-15
Removal, page 7-11
Installation, page 7-29
Replacement, page 8-13 Inspection, page 8-14
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Oil Pump Removal
8-16Engine Lubrication
Oil Pump Overhaul (cont’d)
A
B
A
AB
1. Turn the crankshaft pulley so its top dead center (TDC) mark (A) lines up with the pointer (B).
2. Remove the oil pan (see page 7-11).
3. Remove and discard the oil pump chain tensioner. 4. To hold the rear balancer shaft, insert a 6 mm long
pin punch (Snap-on PPC 108LA or equivalent) (A)
into the maintenance hole in the lower balancer
shaft holder and through the rear balancer shaft.
5. Loosen the oil pump sprocket mounting bolt.
6. Remove the oil pump sprocket (A), then remove the oil pump (B).
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8-22Engine Lubrication
Oil Pump Overhaul (cont’d)
A
8x1.25mm
22N·m(2.2kgf·m,16lbf·ft) 8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)A
10x1.25mm
44 N·m
(4.5 kgf·m, 33 lbf·ft)
10x1.25mm
44 N·m
(4.5 kgf·m, 33 lbf·ft) B
C
D B
A
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
3. To hold the rear balancer shaft, insert a 6 mm long pin punch (Snap-on PPC 108LA or equivalent) (A)
into the maintenance hole in the lower balancer
shaft holder and through the rear balancer shaft.
4. Apply new engine oil to the threads of the oil pump sprocket mounting bolt (A).
5. Loosely install the oil pump (B), then install the oil pump sprocket (C).
6. Tighten the oil pump mounting bolts and the oil pump sprocket mounting bolt.
7. Remove the 6 mm long pin punch (D). 8. Squeeze the new oil pump chain tensioner (A), then
install the set clip (B) on it as shown.
NOTE: The set clip is supplied with the oil pump
chain tensioner.
9. Install the new oil pump chain tensioner.
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8-23
10. Remove the set clip from the oil pump chaintensioner.
11. Install the oil pan (see page 7-29).
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Symptom Diagnostic procedure Also check for
11-13
Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no
DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.












Engine will not start
(MIL works OK, no DTCs set)
1.
2.
3.
4.Test the battery (see page 22-67).
Test the starter (see page 4-9).
Check the fuel pressure (see page 11-325).
Troubleshoot the fuel pump circuit (see page 11-
318).Low compression
No ignition spark
Intake air leaks
Locked up engine
Broken cam chain
Fuel contamination
Engine will not start
(MIL comes on and stays on,
no DTCs set) Troubleshoot the DLC circuit (see page 11-204).
MIL comes on and stays on,
or never comes on at all, no
DTCs set Troubleshoot the MIL circuit (see page 11-203).
Engine will not start
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes) Check the immobilizer system (see page 22-321).
Engine starts but stalls
immediately
(MIL works OK, no DTCs set,
immobilizer indicator stays
on or flashes) Check the immobilizer system (see page 22-323).
Engine is hard to start
(MIL works OK, no DTCs set) 1.
2.
3.Test the battery (see page 22-67).
Check the fuel pressure (see page 11-325).
Clean the throttle body (see page 11-
344).Low compression
Intake air leaks
Fuel contamination
Weak spark
Cold fast idle too low
(MIL works OK, no DTCs set) 1.
2.
3.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Clean the throttle body (see page 11-
344).
Cold fast idle too high
(MIL works OK, no DTCs set) 1.
2.
3.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Do the throttle position learning check (see page
11-343). Intake air leaks
Idle speed fluctuates
(MIL works OK, no DTCs set) 1.
2.
3.
4.DotheECM/PCMidlelearnprocedure(seepage
11-310).
Check the idle speed (see page 11-309).
Do the carbon accumulation check (see page 11-343).
Troubleshoot the A/C signal circuit (see page 11-306). Incorrect valve
timing or clearance
adjustment
Intake air leaks
After warming up, idle speed
is below specification without
load
(MIL works OK, no DTCs set) 1.
2.
Troubleshoot the alternator FR signal circuit
(see page 11-307).
Do the carbon accumulation check (see page 11-343). Incorrect valve
timing or clearance
adjustment
After warming up, idle speed
is above specification without
load
(MIL works OK, no DTCs set) 1.
2.
Troubleshoot the alternator FR signal circuit
(see page 11-307).
Inspect the APP sensor (see page 11-268). Intake air leaks
(cont’d)
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