2006 SUZUKI SX4 valve clearance

Downloaded from www.Manualslib.com manuals search engine 1A-112 Engine General Information and Diagnosis:
DTC P0327 / P0328: Knock Sensor Circuit Low / HighS6RW0D1104040
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC, pending DTC and freeze frame data by using scan tool.
3) Start engine and run it for 10 sec.
4) Check DTC by using scan tool.11Engine mechanical system check
1) Check engine mechanical parts or system which can
cause engine rough idle or poor performance.
• Engine compression (Refer to “Compression Check in
Section 1D”.)
• Valve lash (Refer to “Valve Lash (Clearance)
Inspection in Section 1D”.)
• Valve timing (Refer to “Timing Chain and Chain
Tensioner Removal and Installation in Section 1D”.)
Are they in good condition?Check wire harness and
connection of ECM
ground, ignition system
and fuel injector for
intermittent open and
short.Repair or replace
defective part. Step Action Yes No
E01C01
3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238 3 4
18 19 5 6 7 10 11
17 20
47 46 49 50 51 21 22
5216 259
24 14
29
55 57 54 53 59
60 582
26 27 28 15
30
56 4832 31 34 35 36 37 40 42 39 38 44
45 43 41 331 12 13
238
12
REDC01-56
5 V
I6RW0D110030-01
1. Knock sensor 2. ECM
DTC detecting condition Trouble area
DTC P0327:
Voltage of knock sensor is lower than specified value with engine
running.
(1 driving cycle detection logic)
DTC P0328:
Voltage of knock sensor is higher than specified value with
engine running.
(1 driving cycle detection logic)• Knock sensor circuit (open or short)
• Knock sensor
•ECM

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-7
7) Install air cleaner assembly with air suction hose
referring to “Air Cleaner Assembly Removal and
Installation”.
8) Run engine at specified idle speed and read vacuum
gauge. Vacuum should be within specification.
Vacuum specification (at sea level)
59 – 73 kPa (45 – 55 cmHg, 17.7 – 21.6 in.Hg) at
specified idle speed
9) After checking, disconnect special tool (Vacuum
gauge) from PCV valve.
10) Detach blind cap from PCV valve.
11) Install air cleaner assembly with air suction hose
referring to “Air Cleaner Assembly Removal and
Installation”.
Valve Lash (Clearance) InspectionS6RW0D1404003
1) Remove negative cable at battery.
2) Remove cylinder head cover referring to “Cylinder
Head Cover Removal and Installation”.
3) Remove right side engine under cover, if necessary.
4) Using 17 mm wrench, turn crankshaft pulley (1)
clockwise until cam lobes (2) become perpendicular
to shim faces (3) at valves “1” and “7” as shown in
figure.
5) Check valve lashes with thickness gauge (4)
according to the following procedure.
a) Check valve lashes at valves “1” and “7”.
b) Turn camshafts by 90° (by turning crankshaft
with wrench).
c) Make sure that cam lobes are perpendicular to
shim faces at valves to be checked (in this case,
“3” and “8”), if not, adjust it by turning crankshaft.
Check valve lashes.
d) In the same manner as b) – c), check valve
lashes at valves “4” and “6”.
e) In the same manner as b) – c) again, check
valve lashes at valves “2” and “5”.
If valve lash is out of specification, record valve lash and
adjust it to specification by replacing shim.
Valve clearance specification
When cold (Coolant temperature is 15 – 25 °C (59 –
77 °F)):
• Intake: 0.18 – 0.22 mm (0.007 – 0.009 in.)
• Exhaust: 0.28 – 0.32 mm (0.011 – 0.013 in.)
When hot (Coolant temperature is 60 – 68 °C (140 –
154 °F)):
• Intake: 0.21 – 0.27 mm (0.008 – 0.011 in.)
• Exhaust: 0.30 – 0.36 mm (0.012 – 0.014 in.)Replacement of Shim
1) Close the valve whose shim (2) is to be replaced by
turning crankshaft, then turn tappet (3) till its cut
section (1) faces inside as shown in figure.
I3RM0A140004-01
I2RH0B140006-01

Downloaded from www.Manualslib.com manuals search engine 1D-8 Engine Mechanical:
2) Lift down the valve by turning crankshaft to 360°.
3) Hold tappet at that position using special tool as
follows.
a) Remove its housing bolts.
b) Check housing No. and select special tool
corresponding to housing No., referring to
“Special tool selection table”.
Special tool selection table
c) Hold down the tappet so as not to contact the
shim by installing special tool on camshaft
housing with housing bolt (1) tighten housing
bolts by hand.
Special tool
(A): 09916–67020
(A): 09916–670214) Turn camshaft by approximately 90° clockwise and
remove shim (3).
WARNING!
Never put in the hand between camshaft and
tappet.

5) Using a micrometer (2), measure the thickness of
the removed shim (1), and determine replacement
shim by calculating the thickness of new shim with
the following formula and table.
Shim thickness specification
Intake side:
A = B + C – 0.20 mm (0.008 in.)
Exhaust side:
A = B + C – 0.30 mm (0.012 in.)
A: Thickness of new shim
B: Thickness of removed shim
C: Measured valve clearance
For example of intake side:
When thickness of removed shim is 2.40 mm (0.094
in.), and measured valve clearance is 0.45 mm
(0.018 in.).
A = 2.40 mm (0.094 in.) + 0.45 mm (0.018 in.) – 0.20
mm (0.008 in.) = 2.65 mm (0.104 in.)
Calculated thickness of new shim = 2.65 mm (0.104
in.) No. on camshaft
housingEmbossed mark on special
tool
I2 IN2
I3, I4, I5 IN345
E2 EX2
E3, E4, E5 EX345A: I: Intake side or E: Exhaust side
B: Position from timing chain side
C: Pointing to timing chain side
I2RH0B140011-01
I5RW0C140003-01
1. Special tool 2. Magnet
I2RH0B140013-01
I2RH0B140014-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-9
6) Select new shim No. (1) with a thickness as close as
possible to calculated value.
Available new shims No.
7) Install new shim facing shim No. side with tappet.8) Lift valve by turning crankshaft counterclockwise (in
opposite direction against above Step 4)) and
remove special tool.
Special tool
(A): 09916–67020
(A): 09916–67021
9) Install camshaft housing (1) and tighten bolts to
specified torque.
Tightening torque
Camshaft housing bolt (a): Tighten 11 N⋅m (1.1
kgf-m, 8.0 lb-ft) by the specified procedure
10) Check valve clearance again after adjusting it.
11) After checking and adjusting all valves.
12) Install cylinder head cover referring to “Cylinder
Head Cover Removal and Installation”. Thickness mm
(in.)Shim No.Thickness mm
(in.)Shim No.
2.175 (0.0856) 218 2.600 (0.1024) 260
2.200 (0.0866) 220 2.625 (0.1033) 263
2.225 (0.0876) 223 2.650 (0.1043) 265
2.250 (0.0886) 225 2.675 (0.1053) 268
2.275 (0.0896) 228 2.700 (0.1063) 270
2.300 (0.0906) 230 2.725 (0.1073) 273
2.325 (0.0915) 233 2.750 (0.1083) 275
2.350 (0.0925) 235 2.775 (0.1093) 278
2.375 (0.0935) 238 2.800 (0.1102) 280
2.400 (0.0945) 240 2.825 (0.1112) 283
2.425 (0.0955) 243 2.850 (0.1122) 285
2.450 (0.0965) 245 2.875 (0.1132) 288
2.475 (0.0974) 248 2.900 (0.1142) 290
2.500 (0.0984) 250 2.925 (0.1152) 293
2.525 (0.0994) 253 2.950 (0.1161) 295
2.550 (0.1004) 255 2.975 (0.1171) 298
2.575 (0.1014) 258 3.000 (0.1181) 300
I2RH0B140015-01
1. Tappet 2. Camshaft
(A)2
1
I3RM0A140006-01
I2RH0B140149-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-35
6) Check position of camshaft housings.
Embossed marks are provided on each camshaft
housing, indicating position and direction for
installation. Install housings as indicated by these
marks.
7) After applying engine oil to housing bolts, tighten
them temporarily first. Tighten bolts evenly and
gradually in numerical order (“1” through “21”) by
repeating tightening sequence two or three times
until specified torque is obtained.
Tightening torque
Camshaft housing bolt (a): Tighten 11 N⋅m (1.1
kgf-m, 8.0 lb-ft) by the specified procedure8) For engine with VVT, with hexagonal section (1) of
intake camshaft (2) held stationary with spanner or
the like, tighten bolt of intake cam timing sprocket
assembly (3) to specification.
Tightening torque
Intake cam timing sprocket bolt (a): 60 N·m (6.0
kgf-m, 43.5 lb-ft)
9) Install timing chain with crankshaft sprocket referring
to “Timing Chain and Chain Tensioner Removal and
Installation”.
10) Install timing chain cover referring to “Timing Chain
Cover Removal and Installation”.
11) Check valve lashes referring to “Valve Lash
(Clearance) Inspection”.
12) Perform Steps 10) to 14) of “Installation” of “Timing
Chain Cover Removal and Installation”.
A: I: Intake side or E: Exhaust side
B: Position from timing chain side
C: Pointing to timing chain side
I2RH0B140078-01
“10”“9”
“2” “1”,(a) “6”“5” “14” “13”
“20”
“17”
“19”
“18”
“21”
“12”
“11”
“4” “3” “8”“7” “16” “15”
I3RH0B140041-01
1
2 3
(a)
I3RH0B140042-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-45
Valves and Valve Guides InspectionS6RW0D1406028
Valve Guide
Valve stem-to-guide clearance
Using a micrometer and bore gauge, take diameter readings on valve stems and guides to check stem-to-guide
clearance.
Be sure to take reading at more than one place along the length of each stem and guide.
If clearance exceeds limit, replace valve and valve guide.
Valve stem and valve guide specification
Valve stem end deflection
If bore gauge is not available, check end deflection of
valve stem with a dial gauge instead.
Move stem end in directions (1) and (2) to measure end
deflection.
If deflection exceeds its limit, replace valve stem and
valve guide.
Valve stem end deflection limit
In: 0.14 mm (0.005 in.)
Ex: 0.18 mm (0.007 in.)Va l v e
Visual inspection
• Remove all carbon from valves.
• Inspect each valve for wear, burn or distortion at its
face and stem end, as necessary, replace it.
• Inspect valve stem end face for pitting and wear. If
pitting or wear is found there, valve stem end may be
resurfaced, but not too much to grind off its chamber.
When it is worn out too much that its chamber is gone,
replace valve. Item Standard Limit
Valve stem diameter [A]In 5.465 – 5.480 mm (0.2150 – 0.2157 in.) —
Ex 5.440 – 5.455 mm (0.2142 – 0.2148 in.) —
Valve guide bore [B] In & Ex 5.500 – 5.512 mm (0.2165 – 0.2170 in.) —
Stem-to-guide clearanceIn 0.020 – 0.047 mm (0.0008 – 0.0018 in.) 0.070 mm (0.0028 in.)
Ex 0.045 – 0.072 mm (0.0017 – 0.0028 in.) 0.090 mm (0.0035 in.)
I4RS0B140016-01
IYSQ01141096-01I2RH01140135-01

Downloaded from www.Manualslib.com manuals search engine 1D-48 Engine Mechanical:
Valve Spring InspectionS6RW0D1406030
Valve Spring Free Length and Preload
Referring to data, check to be sure that each spring is in
sound condition, free of any evidence of breakage or
weakening. Remember, weakened valve springs can
cause chatter, not to mention possibility of reducing
power output due to gas leakage caused by decreased
seating pressure.
Valve spring free length
Standard: 36.83 mm (1.450 in.)
Limit: 35.83 mm (1.411 in.)
Valve spring preload
Standard: 107 – 125 N (10.7 – 12.5 kgf) for 31.50 mm
(23.6 – 27.6 lb/1.240 in.)
Limit: 102 N (10.2 kgf) for 31.50 mm (22.5 lb/1.240 in.)Spring Squareness
Use a square and surface plate to check each spring for
squareness in terms of clearance between end of valve
spring and square. Valve springs found to exhibit a
larger clearance than limit must be replaced.
Valve spring squareness
Limit: 1.6 mm (0.063 in.)
I2RH01140143-01
I2RH01140144-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-71
Honing or Reboring Cylinders
1) When any cylinder needs reboring, all other
cylinders must also be rebored at the same time.
2) Select oversized piston according to amount of
cylinder wear.
Oversize piston specification
Oversize 0.50: 78.453 – 78.468 mm (3.0887 –
3.0893 in.)
3) Using micrometer, measure piston diameter.
Measurement position for piston diameter
“a”: 19.5 mm (0.77 in.)4) Rebore and hone cylinder to the following
dimension.
NOTE
Before reboring, install all main bearing caps
in place and tighten to specification to avoid
distortion of bearing bores.

Cylinder bore diameter to be rebored
Oversize 0.50: 78.500 – 78.514 mm (3.0906 –
3.0911 in.)
5) Measure piston clearance after honing.
Piston clearance
0.032 – 0.061 mm (0.0013 – 0.0024 in.)
Specifications
Tightening Torque SpecificationsS6RW0D1407001
I2RH01140157-01
Fastening partTightening torque
Note
N⋅mkgf-mlb-ft
Camshaft housing bolt Tighten 11 N⋅m (1.1 kgf-m, 8.0 lb-ft) by the
specified procedure) / )
EVAP canister purge valve bracket bolt 5 0.5 4.0) / )
Cylinder head cover bolt Tighten 8 N⋅m (0.8 kgf-m, 6.0 lb-ft) by the
specified procedure)
Engine right mounting bracket nut 65 6.5 47.0)
Engine right mounting bush bolt 55 5.5 40.0)
Engine left mounting bush bolt 85 8.5 61.5)
Suspension frame mounting bolt 150 15.0 108.5)
Front lower cross member bolt 55 5.5 40.0)
Starting motor terminal nut 11 1.1 8.0)
Generator terminal nut 5 0.5 4.0)
Battery ground bolt 25 2.5 18.0)
Ground terminal bolt 11 1.1 8.0)
Timing chain cover bolt 25 2.5 18.0)
Timing chain cover nut 25 2.5 18.0)
Cap bolt 25 2.5 18.0)
Oil gallery pipe No.2 and No.3 bolt 11 1.1 8.0)
Crankshaft pulley bolt 150 15.0 108.5)
Oil control valve mounting nut 11 1.1 8.0)
Oil gallery pipe No.1 bolt 30 3.0 21.5)
Timing chain No.1 guide bolt 11 1.1 8.0)
Timing chain tensioner bolt 25 2.5 18.0)
Timing chain tensioner adjuster bolt 11 1.1 8.0)
Intake cam timing sprocket bolt 60 6.0 43.5)
Camshaft housing bolt 11 1.1 8.0)
Venturi plug 5 0.5 3.5)
Cylinder head bolt for M8 Tighten 25 N⋅m (2.5 kgf-m, 18.0 lb-ft) by the
specified procedure)