Page 1560 of 2267

CAUTION:
IAfter removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike piston heads.
IWhen installing chain tensioner, oil seals, or other sliding
parts, lubricate contacting surfaces with new engine oil.
IApply new engine oil to bolt threads and seat surfaces
when installing camshaft sprocket and crankshaft pulley.
IWhen removing oil pump assembly, remove camshaft
position sensor (PHASE), then remove timing chain from
engine.
IBe careful not to damage sensor edges.
RemovalNCEM00121. Drain engine coolant from radiator and cylinder block.
Be careful not to spill coolant on drive belts.
2. Release fuel pressure.
Refer to EC section (ªFuel Pressure Releaseº, ªBASIC SER-
VICE PROCEDUREº).
3. Remove the following belts.
IPower steering pump drive belt
IAlternator drive belt
4. Remove power steering pulley and pump with bracket.
5. Remove front right-side wheel.
6. Remove front right-side splash cover.
7. Remove front undercovers.
8. Remove front exhaust tube.
9. Remove vacuum hoses, fuel hoses, and so on.
10. Remove ignition coils.
11. Remove cylinder head front mounting bracket.
12. Remove rocker cover bolts in numerical order as shown in the
figure.
13. Remove spark plugs.
SEM869F Drain plug
SEM870F Ignition coil
Engine front
SEM871F Remove in numerical order.
TIMING CHAINQG
Components (Cont'd)
EM-20
Page 1568 of 2267
27. Install rocker cover and tighten bolts in numerical order as
shown in the figure.
28. Install spark plugs.
29. Install ignition coils.
30. Install engine front mounting.
31. Install front exhaust tube.
32. Install front undercover.
33. Install front right splash cover.
34. Install front right wheel.
35. Install power steering pulley and pump with bracket.
To check power steering fluid, refer to MA section (ªChecking
Power Steering Fluid and Linesº, ªCHASSIS AND BODY
MAINTENANCEº).
36. Drive belts.
For adjusting drive belt deflection, refer to MA section (ªCheck-
ing Drive Beltsº, ªENGINE MAINTENANCEº).
37. Reinstall parts in reverse order of removal.
SEM908F Tighten in numerical order
TIMING CHAINQG
Installation (Cont'd)
EM-28
Page 1604 of 2267
NEM335 Camshaft bearing noise
Rocker noise
Timing chain
and chain
tensioner noise
VALVE MECHANISM
Valve
Piston pin noiseTIMING CHAIN
Water pump noise
ROTATION
MECHANISM
DRIVE BELT
Connecting rod
bearing noise
Piston
slap noise
Main bearing noiseDrive belt noise
(stick/slipping)
Drive belt noise
(stick/slipping)
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGSR20DE
EM-64
Page 1605 of 2267

NVH Troubleshooting Ð Engine Noise
Use the chart below to help you find the cause of the symptom.
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
Location of
noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemReference
page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
To p o f
Engine
rocker
cover
Cylinder
headTicking or
clickingC AÐA BÐRocker
noiseHydraulic lash adjuster EM-96
Rattle C A Ð A B CCamshaft
bearing
noiseCamshaft journal clear-
ance
Camshaft runoutEM-92
Crankshaft
Pulley
Cylinder
block (Side
of Engine)
Oil panSlap or
knockÐAÐB BÐPiston pin
noisePiston and piston pin
clearance
Connecting rod bushing
clearanceEM-110, 116
Slap or
rapAÐÐB B APiston slap
noisePiston-to-bore clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend and
torsionEM-111, 112
Knock A B C B B BConnecting
rod-bearing
noiseConnecting rod bearing
clearance (Big end)
Connecting rod bushing
clearance (Small end)EM-115, 116
Knock A B Ð A B CMain bear-
ing noiseMain bearing oil clear-
ance
Crankshaft runoutEM-113, 114
Front of
engine
Timing
chain coverTapping or
tickingAAÐBBBTiming
chain and
chain ten-
sioner noiseTiming chain cracks and
wearEM-132
Front of
EngineSqueak or
fizzingA BÐBÐCOther drive
belts (stick-
ing or slip-
ping)Drive belt deflectionMA Section
(ªChecking
Drive Beltsº,
ªENGINE
MAINTE-
NANCEº) CreakingABABABOther drive
belts (slip-
ping)Idler pulley bearing
operation
Squall or
creakABÐBABWater pump
noiseWater pump operationLC Section
(ªWater Pump
Inspectionº,
ªENGINE
COOLING
SYSTEMº)
A: Closely related B: Related C: Sometimes related Ð: Not related
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGSR20DE
NVH Troubleshooting Ð Engine Noise
EM-65
Page 1616 of 2267
CAUTION:
IAfter removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike piston heads.
IWhen installing chain tensioner, oil seals, or other sliding
parts, lubricate contacting surfaces with new engine oil.
IApply new engine oil to bolt threads and seat surfaces
when installing camshaft sprocket and crankshaft pulley.
RemovalNLEM01261. Remove engine under cover.
2. Remove front RH wheel and engine side cover.
3. Drain coolant by removing cylinder block drain plug and lower
radiator hose. Refer to MA-29, ªChanging Engine Coolantº.
4. Remove drive belts and water pump pulley.
5. Disconnect the following parts:
IVacuum hoses
IWires
IHarness
IConnectors
6. Remove rocker cover bolts in numerical order.
7. Remove rocker cover.
8. Remove cylinder head outside bolts.
SEM029G Engine
front
Loosen in numerical order.Rocker cover
SEM287G Front cover
TIMING CHAINSR20DE
Components (Cont'd)
EM-76
Page 1623 of 2267

18. Remove old liquid gasket from mating surfaces of rocker cover
and cylinder head.
19. Apply a continuous bead of liquid gasket to rocker cover gas-
ket and cylinder head as shown in the illustrations.
IUse Genuine RTV silicone sealant Part No. 999MP-A7007
or equivalent.
20. Install rocker cover and oil separator.
IBe sure to install washers between bolts and rocker cover.
ITightening procedure
STEP 1: Tighten bolts1-10-11-13-8inthat order.
STEP 2: Tighten bolts1-13inthat order.
:8-10N×m (0.8 - 1.0 kg-m, 69 - 87 in-lb)
21. Install the following parts:
ISpark plugs and leads
IWater pump pulley and drive belts.
For adjusting drive belt deflection, refer to MA-28, ªChecking
Drive Beltsº.
IRefit lower radiator hose and cylinder block drain plug.
IRefill with engine coolant. Refer to MA-29, ªChanging Engine
Coolantº.
IFront RH wheel
IEngine under cover
22. Connect the following:
IVacuum hoses
IWire harnesses and connectors
BEM006 Engine
front
Unit: mm (in)3 (0.12)(0.39)
(0.39)
SEM051G 3mm
(0.12 in) dia.
SEM052G Engine
front
Tighten in numerical order.Rocker cover
TIMING CHAINSR20DE
Installation (Cont'd)
EM-83
Page 1661 of 2267
NEM333 Camshaft
bearing noiseTappet noise
Belt tensioner
noise
Valve mechanism
Piston pin noiseTiming belt
Water pump
Rotation
mechanism
Drive belt
Connecting rod
bearing noise Piston
slap noise
Main bearing noiseDrive belt noise
(stick/slipping)
Belt tensioner
noise
Drive belt noise
(Slipping)
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGCD20T
EM-121
Page 1662 of 2267

NVH Troubleshooting Chart Ð Engine Noise
Use the chart below to help you find the cause of the problem.
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
Location of
noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemReference
page Before
warm-upAfter
warm-upWhen
startingWhen
idlingWhen
racingWhile
driving
To p o f
engine
Rocker
cover
Cylinder
headTicking or
clickingCAÐABÐTappet
noiseValve clearance Ð
Rattle C A Ð A B CCamshaft
bearing
noiseCamshaft journal clearance
Camshaft runoutEM-147
Crankshaft
pulley
Cylinder
block (Side
of engine)
Oil panSlap or
knockÐAÐB BÐPiston pin
noisePiston and piston pin clear-
ance
Connecting rod bushing
clearanceEM-168,
171
Slap or rap A Ð Ð B B APiston slap
noisePiston-to-bore clearance
Piston ring side clearance
Piston ring end gap
Connecting rod bend and
torsionEM-168,
169, 172,
174
Knock A B C B B BConnecting
rod bearing
noiseConnecting rod bushing
clearance (Small end)
Connecting rod bearing
clearance (Big end)EM-170,
171
Knock A B Ð A B CMain bear-
ing noiseMain bearing oil clearance
Crankshaft runoutEM-169,
172
Camshaft
and injection
pump
Timing belt
coverWhine or
hissingCAÐAAÐTiming belt
noise (too
tight)
Loose timing belt
Belt contacting caseEM-135
Clatter A B Ð C A ÐTiming belt
noise (too
loose)
Front of
engineSqueaking
or fizzingABÐBÐCOther drive
belts
(Sticking or
slipping)Drive belts deflection
*1
CreakingABABABOther drive
belts (Slip-
ping)Idler pulley bearing operation
Squall
CreakABÐBABWater pump
noiseWater pump operation *2
A: Closely related B: Related C: Sometimes related Ð: Not related
*1: MA section (ªChecking Drive Beltsº, ªENGINE MAINTENANCEº)
*2: LC section (ªWater Pump Inspectionº, ªENGINE COOLING SYSTEMº)
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGCD20T
NVH Troubleshooting Chart Ð Engine Noise
EM-122