fuel filter SUZUKI SWIFT 2008 2.G Service Workshop Manual
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Page 9 of 1496

Downloaded from www.Manualslib.com manuals search engine Precautions: 00-4
General PrecautionsS7RS0B0000002
The WARNING and CAUTION describe some general 
precautions that you should observe when servicing a 
vehicle. These general precautions apply to many of the 
service procedures,  and they will not necessarily be 
repeated with each procedure to which they apply.
WARNING! 
• Whenever raising a vehicle for service, be  sure to follow the instructions under 
“Vehicle Lifting Points in Section 0A”.
• When it is necessary to do service work  with the engine running, make sure that 
the parking brake is set fully and the 
transmission is in Neutral (for manual 
transmission vehicles) or Park (for 
automatic transmission vehicles), Keep 
hands, hair, clothing, tools, etc. away from 
the fan and belts when the engine is 
running.
• When it is necessary to run the engine  indoors, make sure that the exhaust gas is 
forced outdoors.
• Do not perform service work in areas  where combustible materials can come in 
contact with a hot exhaust system. When 
working with toxic or  flammable materials 
(such as gasoline and refrigerant), make 
sure that the area you work in is well-
ventilated.
• To avoid getting burned, keep away from  hot metal parts such as the radiator, 
exhaust manifold, tail  pipe, muffler, etc.
• New and used engine oil can be  hazardous. Children and pets may be 
harmed by swallowing new or used oil. 
Keep new and used oil and used engine oil 
filters away from children and pets.
Continuous contact with used engine oil 
has been found to cause [skin] cancer in 
laboratory animals. Brief contact with used 
oil may irritate skin.  To minimize your 
exposure to used engine oil, wear a long-
sleeve shirt and moisture-proof gloves 
(such as dish washing gloves) when 
changing engine oil. If engine oil contacts 
your skin, wash thoroughly with soap and 
water. Launder any clothing or rags if wet 
with oil, recycle or properly dispose of 
used oil and filters. • Be sure to observe following instructions 
when handling service materials such as 
fuel, oil, fluid, coolant, grease, sealant, 
thread lock cement, etc. Otherwise, your 
health may be ruined.
– Whenever handling any of these service materials, wear safety glasses to protect 
your eyes. If it gets into your eye, it may 
cause inflammation.
– Whenever handling any of these service  materials, wear moistu re-proof gloves to 
protect your skin. If it adheres to your 
skin, it may cause inflammation.
– Do not swallow any of these service  materials. It would cause diarrhea or 
nausea.
– Keep all these materials out of children’s  reach.
• Make sure the bonnet is fully closed and  latched before driving. If  it is not, it can fly 
up unexpectedly during driving, 
obstructing your view and resulting in an 
accident.
 
• Before starting any service work, cover fenders, seats  and any other parts that are likely to get scratched or 
stained during servicing. Also, be aware that what you 
wear (e.g., buttons) ma y cause damage to the 
vehicle’s finish.
I2RH01010025-01  
Page 21 of 1496

Downloaded from www.Manualslib.com manuals search engine Table of Contents 0- i
0
Section 0
CONTENTS
General Information
General Information ................................ 0A-1
General Description ............................................. 0A-1
Abbreviations ...................................................... 0A-1
Symbols .............................................................. 0A-2
Wire Color Symbols ............................................ 0A-2
Fasteners Information ......................................... 0A-3
Vehicle Lifting Points ........................................... 0A-5
Engine Supporting Points ................................... 0A-7
Vehicle Identification Number ............................. 0A-7
Engine Identification Number .............................. 0A-7
Transmission Identification  Number .................... 0A-7
Component Locatio n ........................................... 0A-8
Warning, Caution and Information Labels  Location ............................................................ 0A-8
Maintenance and Lubricat ion ................. 0B-1
Precautions........................................................... 0B-1
Precautions for Maintenance and Lubrication ..... 0B-1
Scheduled Maintenance ...................................... 0B-1 Maintenance Schedule under Normal Driving Conditions ......................................................... 0B-1
Maintenance Recommended under Severe  Driving Conditions ............................................. 0B-2
Repair Instructions .............................................. 0B-3 Accessory Drive Belt Inspection.......................... 0B-3
Accessory Drive Belt Repl acement ..................... 0B-4
Valve Lash (Clearance) Inspection ..................... 0B-4
Engine Oil and Filter Change .............................. 0B-4
Engine Coolant Change ...... ................................ 0B-5
Exhaust System Inspection ................................. 0B-6
Spark Plug Replacement .................................... 0B-6
Air Cleaner Filter Inspection ................................ 0B-6
Air Cleaner Filter Replac ement ........................... 0B-6 Fuel Lines and Connections Inspection .............. 0B-6
Fuel Filter Replacement ...................................... 0B-7
Fuel Tank Inspection ........................................... 0B-7
PCV Valve Inspection ......................................... 0B-7
Fuel Evaporative Emission Control System 
Inspection .......................................................... 0B-7
Brake Discs and Pads Inspection ....................... 0B-7
Brake Hoses and Pipes Inspection ..................... 0B-7
Brake Fluid Inspection......................................... 0B-8
Brake Fluid Replacement .................................... 0B-8
Brake Lever and Cable Inspection ...................... 0B-8
Clutch Fluid Inspection ........................................ 0B-8
Tires Inspection ................................................... 0B-9
Wheel Discs Inspection ....................................... 0B-9
Wheel Bearing Inspection ................................... 0B-9
Suspension System Inspection ........................... 0B-9
Steering System Inspection .............................. 0B-10
Drive Shaft (Axle) Boots Inspection .................. 0B-10
Manual Transaxle Oil Inspection ....................... 0B-10
Manual Transaxle Oil Replacement .................. 0B-10
Automatic Transaxle Fluid  Level Inspection...... 0B-11
Automatic Transaxle Fluid Replacement .......... 0B-11
Automatic Transaxle Fluid Cooler Hose  Inspection ........................................................ 0B-11
All Latches, Hinges and Locks Inspection......... 0B-11
HVAC Air Filter (If Equipped) Inspection ........... 0B-12
HVAC Air Filter (If Equipped) Replacement ...... 0B-12
Final Inspection for Maint enance Service ......... 0B-12
Specifications .................... .................................0B-13
Tightening Torque Specifications ...................... 0B-13
Special Tools and Equipmen t ...........................0B-13
Recommended Fluids and Lubricants............... 0B-13
Special Tool ...................................................... 0B-14  
Page 31 of 1496

Downloaded from www.Manualslib.com manuals search engine Maintenance and Lubrication:  0B-1
General Information
Maintenance and Lubrication
Precautions
Precautions for Maintenance and LubricationS7RS0B0200001
Air Bag Warning
Refer to “Air Bag Warning in Section 00”.
Scheduled Maintenance
Maintenance Schedule under Normal Driving ConditionsS7RS0B0205001
NOTE
• This interval should be judged by odometer reading or months, whichever comes first.
• This table includes service as scheduled up to 90,000 km (54,000 miles) mileage. Beyond 90,000 km 
(54,000 miles), carry out the same services at the same intervals respectively.
 
Interval Km (x 1,000) 15 30 45 60 75 90
Miles (x 1,000) 9 18 27 36 45 54
Months 12 24 36 48 60 72
Engine
Accessory drive belt (I:   ), R:   ))——I——R
Valve lash (clearance) (I:   )) —I—I—I
Engine oil and oil filter (R:   )) RRRRRR
Engine coolant (R:   ))— —R— — R
Exhaust system (I:   )) —I—I—I
Ignition system
Spark plugs (R:  ) )When unleaded fuel is used Iridium Plug
Replace every 60,000 km (36,000 
miles) or 48 months
When leaded fuel is used, refer to “Maintenance Recommended under Severe Driving 
Conditions”.
Fuel system
Air cleaner filter (R:   ), I:   )) Paved-road
I I R I I R
Dusty conditions Refer to “Maintenance Recommended 
under Severe Driv
ing Conditions”.
Fuel lines and connections (I:   )) —I—I—I
Fuel filter (R:   )) (See NOTE below) Replace every 105,000 km (63,000 
miles)
Fuel tank (I:   ))— —I— — I
Emission control system
PCV valve (I:   )) ————— I
Fuel evaporative emission control system (I:   )) ————— I
Brake
Brake discs and pads (thickness, wear, damage) (I:   )) IIIIII
Brake hoses and pipes (leakage, damage, clamp) (I:   )) —I—I—I
Brake fluid (R:   )) —R—R—R
Brake lever and cable (damage, stroke, operation) (I:   )) Inspect at first 15,000 km (9,000 miles 
only)
Chassis and body
Clutch (fluid leakage, level) (I:   )) —I—I—I
Tires (wear, damage, rotation) / wheels (damage) (I:   ) /  ) ) IIIIII
Suspension system (tightness, damage, rattle, breakage) (I:   )) —I—I—I
Steering system (tightness, damage, breakage, rattle) (I:   )) —I—I—I
Drive shaft (axle) boots (I:   ))— —I— — I
Manual transaxle oil (leakage, level) (I:   ) 1st 15,000 km only) (R:   ))I—R——R  
Page 32 of 1496

Downloaded from www.Manualslib.com manuals search engine 0B-2 Maintenance and Lubrication: 
NOTE
• “R”: Replace or change
• “I”: Inspect and correct, replace or lubricate if necessary
• For spark plugs, replace every 50,000 km if the local law requires.
• Periodic replacement of fuel filter is not necessary if it is not instructed in “Periodic Maintenance Schedule” section of the Owner’s manual. The scheduled maintenance varies depending on the 
vehicle specification.
 
Maintenance Recommended under Severe Driving ConditionsS7RS0B0205002
If the vehicle is usually used under the conditions corres ponding to any severe condition code given below, IT IS 
RECOMMENDED that applicable maintenance operation be per formed at the particular interval as shown in the 
following table.
Severe condition code:
A: Repeated short trips
B: Driving on rough and/or muddy roads
C: Driving on dusty roads
D: Driving in extremely cold weather and/or salted roads
E: Repeated short trips in extremely cold weather
F: Leaded fuel use
G: – – – – –
H: Towing a trailer (if admitted) Automatic transaxle fluid
Fluid level (I: 
 )) —I—I—I
Fluid change (R:   )) Replace every 165,000 km (99,000 
miles)
Fluid hose (I:   ))———I——
All latches, hinges and locks (I:   )) —I—I—I
HVAC air filter (if equipped) (I:  ) ) (R:  ))— IR — IR
Interval
Km (x 1,000)
15 30 45 60 75 90
Miles (x 1,000) 9 18 27 36 45 54
Months 12 24 36 48 60 72
Severe 
condition code MaintenanceMaintenance 
operation Maintenance interval
– B C D – – – – Accessory drive belt  )
 I Every 15,000 km
(9,000 miles) or 12 months
 )  R Every 45,000 km
(27,000 miles) or 36 months
A – C D E F – H Engine oil and oil filter  ) R Every 7,500 km
(4,500 miles) or 6 months
– – C – – – – – Air cleaner filter *1  )
 I Every 2,500 km
(1,500 miles)
 )  R Every 30,000 km
(18,000 miles) or 24 months
A B C – E F – H Spark plugs Iridium plug  ) R Every 30,000 km (18,000 miles) or 
24 months
– B C D – – – H Wheel bearings  ) I Every 15,000 km
(9,000 miles) or 12 months
– B – D E – – H Drive shaft (axle) boots  ) I Every 15,000 km
(9,000 miles) or 12 months
– B – – E – – H Manual transaxle oil  ) R First time only:
15,000 km (9,000 miles) or 12 
months
Second time and after:
Every 30,000 km (18,000 miles) or 
24 months reckoning from 0 km (0 
mile) or 0 month  
Page 36 of 1496

Downloaded from www.Manualslib.com manuals search engine 0B-6 Maintenance and Lubrication: 
Exhaust System InspectionS7RS0B0206006
WARNING! 
To avoid danger of being burned, do not 
touch exhaust system when it is still hot.
Any service on exhaust system should be 
performed when it is cool.
 
When carrying out periodic maintenance, or the vehicle 
is raised for other service, check exhaust system as 
follows:
• Check rubber mountings for damage, deterioration,  and out of position.
• Check exhaust system for leakage, loose  connections, dents and damages.
If bolts or nuts are loose,  tighten them to specification.
• Check nearby body areas for damaged, missing or  mispositioned parts, ope n seams, holes, loose 
connections or other defects which could permit 
exhaust fumes to seep into the vehicle.
• Make sure that exhaust system components have  enough clearance from the underbody to avoid 
overheating and possible damage to floor carpet.
• Any defects should be fixed at once.
Spark Plug ReplacementS7RS0B0206007
Replace spark plugs with new ones referring to “Spark 
Plug Removal and Installation in Section 1H”.
Air Cleaner Filter InspectionS7RS0B0206008
1) Remove air cleaner case clamps.
2) Take air cleaner filter out of case.
3) Check that filter is not excessively dirty, damaged or  oily, clean filter with compressed air from air outlet 
side of filter.
4) Install air cleaner filter  and Clamp cap securely.
Air Cleaner Filter ReplacementS7RS0B0206009
Replace air cleaner filter with new one according to 
Steps 1), 2) and 4) of “Air Cleaner Filter Inspection”.
Fuel Lines and Connections InspectionS7RS0B0206010
Visually inspect fuel lines and connections for evidence 
of fuel leakage, hose cracking and damage. Make sure 
all clamps are secure.
Repair leaky joints, if any.
Replace hoses that are suspected of being cracked.
I4RS0A020003-01
I2RH01140007-01
I4RS0B020001-01
I4RS0A020005-01  
Page 37 of 1496

Downloaded from www.Manualslib.com manuals search engine Maintenance and Lubrication:  0B-7
Fuel Filter ReplacementS7RS0B0206011
Fuel filter is installed in fuel pump assembly in fuel tank.
Replace fuel filter or fuel  pump assembly with new one, 
referring to “Fuel Pump Assembly Removal and 
Installation in Section 1G” for proper procedure.
Fuel Tank InspectionS7RS0B0206012
Check fuel tank damage, cracks, fuel leakage, corrosion 
and tank bolts looseness.
If a problem is found, repair or replace.
PCV Valve InspectionS7RS0B0206013
Check crankcase ventilation hose and PCV hose for 
leaks, cracks or clog, and PCV valve for stick or clog. 
Refer to “PCV Valve Inspection in Section 1B” for PCV 
valve checking procedure.
Fuel Evaporative Emission Control System 
Inspection
S7RS0B0206014
1) Visually inspect hoses for cracks, damage, or  excessive bends. Inspect a ll clamps for damage and 
proper position.
2) Check EVAP canister for operation and clog,  referring to “EVAP Canister  Inspection in Section 
1B”.
If a malfunction is found, repair or replace.
Brake Discs and Pads InspectionS7RS0B0206015
1) Remove wheel and caliper but don’t disconnect  brake hose from caliper. 2) Check disc brake pads and discs for excessive wear, 
damage and deflection. Replace parts as necessary. 
For details, refer to “Front Disc Brake Pad Inspection 
in Section 4B”, “Front Brake Disc Inspection in 
Section 4B”, “Rear Disc Brake Pad Inspection in 
Section 4C” and/or “Rear Brake Disc Inspection in 
Section 4C”.
Be sure to torque caliper pin bolts to specification.
Brake Hoses and Pipes InspectionS7RS0B0206016
Perform this inspection where these is enough light and 
use a mirror as necessary.
• Check brake hoses and pipes for proper hookup, leaks, cracks, chafing and other damage.
• Check that hoses and pipes are clear of sharp edges  and moving parts.
Repair or replace any of these parts as necessary.
CAUTION! 
After replacing any brake pipe or hose, be 
sure to carry out  air purge operation.
 
I4RS0B020002-02
I4RS0A020006-01
I3RM0A020006-01
I4RS0A020008-01  
Page 43 of 1496

Downloaded from www.Manualslib.com manuals search engine Maintenance and Lubrication:  0B-13
Brake
Foot brake
Check the following:
• that brake pedal has proper travel,
• that brake works properly,
• that it is free from noise,
• that vehicle does not pull to one side when brake is applied.
• and that brake do not drag.
Parking brake
Check that lever has proper travel.
WARNING! 
With vehicle parked on a fairly steep slope, 
make sure nothing is in the way downhill to 
avoid any personal injury or property 
damage. Be prepared to apply regular brake 
quickly even if vehicle should start to move.
 
Check to ensure that parking brake is fully effective 
when the vehicle is stopped on the safe slope and brake 
lever is pulled all the way.
Steering
• Check to ensure that steering wheel is free from  instability, or abnormally heavy feeling. • Check that the vehicle does not wander or pull to one 
side.
Engine
• Check that engine responds readily at all speeds.
• Check that engine is free from abnormal noise and  abnormal vibration.
Body, Wheels and Power Transmitting System
Check that body, wheels and  power transmitting system 
are free from abnormal noise and abnormal vibration or 
any other abnormal condition.
Meters and Gauge
Check that speedometer, odometer, fuel meter, 
temperature gauge, etc. are operating accurately.
Lights
Check that all lights operate properly.
Windshield Defroster
Periodically check that ai r comes out from defroster 
outlet when operating heater or air conditioning.
Set mode control lever to defroster position and fan 
switch lever to “HI” position for this check.
Specifications
Tightening Torque SpecificationsS7RS0B0207001
Reference:
For the tightening torque of fastener not specified in this  section, refer to “Fasteners Information in Section 0A”.
Special Tools and Equipment
Recommended Fluids and LubricantsS7RS0B0208001
Fastening part Tightening torque
Note
N ⋅mkgf-mlb-ft
Engine oil drain plug 35 3.5  25.5  )
Oil filter 14 1.4  10.5 for reference   )
Engine oilSG, SH, SJ, SL or SM grade (Refer to “Engine Oil and Filter Change” for engine 
oil viscosity.)
Engine coolant
(Ethylene glycol base coolant) “Antifreeze/Antico
rrosion coolant”
Brake fluid Refer to reservoir cap of brake master cylinder.
Manual transaxle oil Refer to “Manual Transaxle Oil Change in Section 5B”.
Automatic transaxle fluid Refer to “A/T Fluid Change in Section 5A”.
Door hinges Engine oil or water resistance chassis grease
Hood latch assembly Engine oil or water resistance chassis grease
Key lock cylinder Spray lubricant  
Page 87 of 1496

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis:  1A-37
TP SENSOR 2 VOLT (THROTTLE POSITION SENSOR 
(SUB) OUTPUT VOLTAGE, V)
The TP sensor (sub) reading provides throttle valve 
opening information in the form of voltage.
APP SENSOR 1 VOLT (ACCELERATOR PEDAL 
POSITION (APP) SENSOR (MAIN) OUTPUT 
VOLTAGE, V)
The APP sensor (main) read ing provides accelerator 
pedal opening information in the form of voltage.
APP SENSOR 2 VOLT (ACCELERATOR PEDAL 
POSITION (APP) SENSOR (S UB) OUTPUT VOLTAGE, 
V)
The APP sensor (sub) reading  provides accelerator 
pedal opening information in the form of voltage.
ACCEL POSITION (ABSOLUTE ACCELERATOR 
PEDAL POSITION, %)
When accelerator pedal is at fully released position, 
accelerator pedal is indicated as 0 – 5% and 90 – 100% 
fully depressed position. THROTTLE TARGET POSI (TARGET THROTTLE 
VALVE POSITION, %)
Target throttle valve position is ECM internal parameter 
which indicates the ECM requested throttle valve 
position.
BATTERY CURRENT (A)
This parameter indicates elec
tric load value (current 
consumption) that detected by electric load current 
sensor.
GENERATOR CONT DUTY (GENERATOR CONTROL 
DUTY, %)
This parameter indicates generator control duty ratio that 
controls production electricity of generator by ECM.
100%: No limitation for the generating
0%: Maximum limitation for the generating
GENERATOR FIELD DUTY (GENERATOR FIELD 
COIL DUTY, %)
This parameter indicates ope rating rate (status of 
production electricity) for gen erator by field coil duty 
ratio.
100%: maximum operation.
0%: minimum operation.
Visual InspectionS7RS0B1104008
Visually check the following parts and systems.
Inspection item Reference section
• Engine oil – level, leakage “Engine  Oil and Filter Change in Section 0B”
• Engine coolant – level, leakage “Co olant Level Check in Section 1F”
• Fuel – level, leakage “Fuel Lines and Connections Inspection in  Section 0B”
• Air cleaner element – dirt, clogging “Air  Cleaner Filter Inspection in Section 0B”
• Battery – fluid level, corrosion of terminal “Battery Description in Section 1J”
• Water pump belt – tension damage “Accessory Drive Belt Inspection in Section  0B”
• Throttle valve – operating sound “Electric Throttle Body Assembly On-Vehicle  Inspection in Section 1C”
• Vacuum hoses of air intake system  – disconnection, looseness, 
deterioration, bend “Vacuum Hose and Purge Valve Chamber 
Inspection in Section 1B”
• Connectors of electric wire harness – disconnection, friction
• Fuses – burning
• Parts – installation, bolt – looseness
• Parts – deformation
• Other parts that can be checked visually
Also check the following items at engine start, if possible
• Malfunction indicator lamp – Operation “Malfunction Indicator Lamp (MIL) Check”
• Charge warning lamp – Operation “Genera tor Symptom Diagnosis in Section 1J”
• Engine oil pressure warning lamp – Operation “O il Pressure Switch Inspection in Section 9C”
• Engine coolant temp. meter – Operation “ECT Sensor Inspection in Section 1C”
• Fuel level meter – Operation “Fuel Level Sensor Inspection in Section 9C”
• Tachometer – Operation
• Abnormal air being inhaled from air intake system
• Exhaust system – leakage of exhaust gas, noise
• Other parts that can be checked visually  
Page 91 of 1496

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis:  1A-41
Engine Symptom DiagnosisS7RS0B1104010
Perform troubleshooting referring to the followings when ECM has detected no DTC and no abnormality has been 
found in “Visual Inspection” and “Engine Basic Inspection”.
Condition Possible cause Correction / Reference Item
Hard starting (Engine 
cranks OK) Faulty spark plug
“Spark Plug Inspection in Section 1H”
Leaky high-tension cord “High-Tension Cord Inspection in Section 1H”
Loose connection or disconnection of 
high-tension cord(s) or lead wire(s) “High-Tension Cord Removal and Installation 
in Section 1H”
Faulty ignition coil “Ignition Coil Assembly (Including ignitor) 
Inspection in Section 1H”
Dirty or clogged fuel hose or pipe “Fuel Pressure Check”
Malfunctioning fuel pump “Fuel Pressure Check”
Air drawn in through intake manifold 
gasket or throttle body gasket
Faulty electric throttle body assembly “Electric Throttle Body Assembly On-Vehicle 
Inspection in Section 1C”
Faulty APP sensor assembly “APP Sensor Assembly Inspection in Section 
1C”
Faulty ECT sensor or MAF sensor “ECT Sensor Inspection in Section 1C” or 
“MAF and IAT Sensor Inspection in Section 
1C”
Faulty ECM
Low compression “Compression Check in Section 1D”
Poor spark plug tightening or faulty 
gasket “Spark Plug Removal and Installation in 
Section 1H”
Compression leak from valve seat “Valves and Valve Guides Inspection in 
Section 1D”
Sticky valve stem “Valves and Valve Guides Inspection in 
Section 1D”
Weak or damaged valve springs “Valve Spring Inspection in Section 1D”
Compression leak at cylinder head 
gasket “Cylinder Head Inspection in Section 1D”
Sticking or damaged piston ring “Cylinders, Pistons and Piston Rings 
Inspection in Section 1D”
Worn piston, ring or cylinder “Cylinders, Pistons and Piston Rings 
Inspection in Section 1D”
Malfunctioning PCV valve “PCV Valve Inspection in Section 1B”
Camshaft position control (VVT) system 
out of order “Oil Control Valve Inspection in Section 1D”
Faulty EGR system “EGR System Inspection in Section 1B”
Low oil pressure Improper oil viscosity “Engine Oil and Filter Change in Section 0B”
Malfunctioning oil pressure switch “Oil Pressure Switch Inspection in Section 9C”
Clogged oil strainer “Oil Pan and Oil Pump Strainer Cleaning in 
Section 1E”
Functional deterioration of oil pump “Oil Pump Inspection in Section 1E”
Worn oil pump relief valve “Oil Pump Inspection in Section 1E”
Excessive clearance in various sliding 
parts
Engine noise – Valve 
noise
NOTE
Before checking 
mechanical noise, make 
sure that:
• Specified spark plug is  used.
• Specified fuel is used.
 
Improper valve lash “Camshaft, Tappet and Shim Inspection in 
Section 1D”
Worn valve stem and guide “Valves and Valve Guides Inspection in 
Section 1D”
Weak or broken valve spring “Valve Spring Inspection in Section 1D”
Warped or bent valve “Valves and Valve Guides Inspection in 
Section 1D”  
Page 92 of 1496

Downloaded from www.Manualslib.com manuals search engine 1A-42 Engine General Information and Diagnosis: 
Engine noise – Piston, 
ring and cylinder noise
NOTE
Before checking 
mechanical noise, make 
sure that:
• Specified spark plug is used.
• Specified fuel is used.
 
Worn piston, ring and cylinder bore “Cylinders, Pistons and Piston Rings 
Inspection in Section 1D”
Engine noise – 
Connecting rod noise
NOTE
Before checking 
mechanical noise, make 
sure that:
• Specified spark plug is  used.
• Specified fuel is used.
 
Worn piston, ring and cylinder bore “Cylinders, Pistons and Piston Rings 
Inspection in Section 1D”
Worn rod bearing “Crank Pin and Connecting Rod Bearings 
Inspection in Section 1D”
Worn crank pin “Crank Pin and Connecting Rod Bearings 
Inspection in Section 1D”
Loose connecting rod nuts “Pistons, Piston Rings, Connecting Rods and 
Cylinders Removal and Installation in Section 
1D”
Low oil pressure Condition “Low oil pressure”
Engine noise – 
Crankshaft noise
NOTE
Before checking 
mechanical noise, make 
sure that:
• Specified spark plug is  used.
• Specified fuel is used.
 
Low oil pressure Condition “Low oil pressure”
Worn bearing “Main Bearings Inspection in Section 1D”
Worn crankshaft journal “Crankshaft Inspection in Section 1D”
Loose bearing cap bolts “Main Bearings, Crankshaft and Cylinder Block 
Removal and Installation in Section 1D”
Excessive crankshaft thrust play “Crankshaft Inspection in Section 1D”
Engine overheating Inoperative thermostat “Thermostat Inspection in Section 1F”
Poor water pump performance “Water Pump Inspection in Section 1F”
Clogged or leaky radiator “Radiator On-Vehicle Inspection and Cleaning 
in Section 1F”
Improper engine oil grade “Engine Oil and Filter Change in Section 0B”
Clogged oil filter or oil strainer “Oil Pressure Check in Section 1E”
Poor oil pump performance “Oil Pressure Check in Section 1E”
Faulty radiator cooling fan control 
system “Radiator Cooling Fan Low Speed Control 
System Check” or “Rad
iator Cooling Fan High 
Speed Control System Check”
Dragging brakes Condition “Dragging brakes” in “Brakes 
Symptom Diagnosis in Section 4A”
Slipping clutch Condition “Slipping clutch” in “Clutch System 
Symptom Diagnosis in Section 5C”
Blown cylinder head gasket “Cylinder Head Inspection in Section 1D”
Air mixed in cooling system
Condition Possible cause Correction / Reference Item