2006 ACURA CSX check oil


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Out-of-Round and Taper
Journal Out-of-Round
Standard (New): 0.005 mm (0.0002 in.) max.
Service Limit: 0.010 mm (0.0004 in.)
Journal Taper
Standard (New): 0.005 mm (0.0002 in.) max.
Service Limit: 0.010 mm (0.0004 in.) Straightness
Crankshaft Total Runout
Standard (New): 0.03 mm (0.0012 in.) max.
Service Limit: 0.04 mm (0.0016 in.)
7-15
Crankshaft Inspection
1. Remove the crankshaft from the engine block(see page 7-13).
2. Clean the crankshaft oil passages with pipe cleaners or suitable brush.
3. Clean the keyway and the threads, and check for damage.
4. Measure the out-of-round at the middle of each rod and main journal in two places. The difference
between measurements on each journal must not
be more than the service limit.
5. Measure the taper at the edges of each rod and the main journal. The difference between
measurement on each journal must not be more
than the service limit. 6. Place the V-blocks on a flat surface.
7. Check the total runout with the crankshaft
supported on V-blo cks.
8. Measure the runout on all main journals. Rotate the crankshaft two complete revolutions. The
difference between measurements on each journal
must not be more than the service limit.
08/08/21 14:32:37 61SNR030_070_0015
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Piston Pin-to-Piston Clearance
Standard (New): 0.005 to 0.002 mm
( 0.00020 to 0.00008 in.)
Service Limit: 0.005 mm (0.0002 in.)
Piston Pin-to-Connecting Rod Clearance
Standard (New): 0.005 0.015 mm (0.0002 0.0006 in.)
Service Limit: 0.02 mm (0.0008 in.)
Reassembly
7-20 Engine Block
Piston, Pin, and Connecting Rod Replacement (cont’d)
A
3. Check the difference between the piston pin
diameter and the piston pin hole diameter in the
piston.
4. Measure the piston pin-to-connecting rod clearance. 1. Install a piston pin snap ring (A) only on one side.
2. Coat the piston pin bore in the piston, the bore in
the connecting rod, and the piston pin with new
engine oil.
3. Heat the piston to about 70 °C (158 °F).
08/08/21 14:32:39 61SNR030_070_0020
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Piston Ring End-Gap
Top Ring:
Standard (New): 0.20 0.35 mm
(0.008 0.014 in.)
Service Limit: 0.60 mm (0.024 in.)
Second Ring:
K20Z2 engine:
Standard (New): 0.40 0.55 mm (0.016 0.022 in.)
Service Limit: 0.70 mm (0.028 in.)
K20Z3 engine:
Standard (New): 0.50 0.65 mm (0.020 0.026 in.)
Service Limit: 0.75 mm (0.030 in.)
Oil Ring:
Standard (New): 0.20 0.70 mm (0.008 0.028 in.)
Service Limit: 0.80 mm (0.031 in.)
7-22 Engine Block
Piston Ring Replacement (cont’d)
A
B 15 20 mm (0.6 0.8 in.) A
B
K20Z2 engine:
A
B
K20Z3 engine:
BTop Ring (Standard):
A: 3.1 mm (0.12 in.)
B: 1.2 mm (0.05 in.)
Second Ring (Standard):
A: 3.4 mm (0.13 in.)
B: 1.2 mm (0.05 in.)
Piston Ring Dimensions
A A
BC
C
4. Using a piston that has its rings removed, push a
new ring (A) into the cylinder bore 15 20 mm
(0.6 0.8 in.) from the bottom.
5. Measure the piston ring end-gap (B) with a feeler gauge:
 If the gap is too small, check to see if you have the proper rings for your engine.
 If the gap is too large, recheck the cylinder bore diameter against the wear limits (see page 7-16).
If the bore is beyond the service limit, the engine
block must be rebored. 6. Install the top ring and the second ring as shown.
The top ring (A) has a 1R mark, and the second ring
(B) has a 2R mark. The manufacturing marks (C)
must be facing upward.
08/08/21 14:33:07 61SNR030_070_0022
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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.
08/08/21 14:33:08 61SNR030_070_0023
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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.
08/08/21 14:33:08 61SNR030_070_0023
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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.
08/08/21 14:33:08 61SNR030_070_0024
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Point A Point B = Difference in Diameter
Difference in Diameter
Specification: 0 0.1 mm (0 0.004 in.) Special Tools Required
7-257-25
Connecting Rod Bolt Inspection Crankshaft Installation
20 mm
(0.79 in.)
35 mm
(1.38 in.)
B A
07746-0010700 07749-0010000
1. Measure the diameter of each connecting rod bolt
at point A and point B.
2. Calculate the difference in diameter between point A and point B.
3. If the difference in diameter is out of specification, replace the connecting rod bolt.  Driver 07749-0010000
 Attachment, 24 x 26 mm 07746-0010700
 Oil seal driver attachment 96 07ZAD-PNAA100
1. M/T model: Install the crankshaft end bushing when replacing the crankshaft.
Using the driver and the attachment, 24 x 26 mm
drive in the crankshaft end bushing until the driver
and the attachment bottom against the crankshaft.
2. Check the connecting rod bearing clearance with plastigage (see page 7-8).
3. Check the main bearing clearance with plastigage (see page 7-6).
(cont’d)
08/08/21 14:33:09 61SNR030_070_0025
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Symptom Diagnostic procedure Also check for
8-5
Symptom Troubleshooting Index
Excessive engine oil
consumption
1.
2.
3.
4.
5.Verify that the engine oil filler cap, the oil drain
bolt, and the oil filter are tight.
Check for oil leaks.
Check for worn valve guide(s) (see page 6-55) or
worn valve stem seal(s) (see page 6-54).
Check for damaged or worn piston ring(s)
(see page 7-21).
Check for damaged or worn engine internal parts
(cylinder wall, pistons, etc.) (see page 7-16).
Low oil pressure indicator does
not come on with the ignition
switch in ON (II) 1.
2.Do the low oil pressure indicator circuit
troubleshooting (Open) (see page 8-7).
Test the oil pressure switch (see page 8-9). An open in the wire
between the engine
control module (ECM)/
powertrain control
module (PCM) and the
oil pressure switch
Low oil pressure indicator stays
on 1.
2.
3.
4.
5.
6.
7.
8.Check the engine oil level.
Do the low oil pressure indicator circuit
troubleshooting (Short) (see page 8-8).
Test the oil pressure switch (see page 8-9).
Check the engine oil pressure (see page 8-10).
Check the oil filter for clogging.
Check the oil screen for clogging.
Check the relief valve (see page 8-15).
Testtheoilpump(seepage8-17). A wire shorted to
ground between the
ECM/PCM and the oil
pressure switch
08/08/21 14:36:41 61SNR030_080_0005
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