The document summarizes common problems with internal combustion engines and their solutions. It discusses issues that can prevent an engine from starting such as problems with the fuel system, ignition system, starting system, or lubrication system. Specific issues mentioned include empty fuel tanks, faulty wiring, non-working fuel pumps, weak batteries, and defective spark plugs. The document also covers problems that cause engines to run poorly such as compression leaks, worn piston rings, or ignition coil defects. Common causes of engine knocking and smoking are also listed along with recommended solutions.

1. TROUBLESHOOTING OF
INTERNAL COMBUSTION
ENGINE
Present by
Six star
Group 6
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2. Group Member name
Nur -E- Alam Siddike - 10307050
Arup Mazumder - 10307012
Abul Hasnath - 10307022
K md Brohan - 11307008
Shima - 11307007
Md. Shake Rasel - 10207051
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3. Objective
 To know about Internal Combustion
Engine
 To know about the trouble of Internal
Combustion Engine
 Fixed the problem of Internal
Combustion Engine
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4. Engine can avoid many troubles by
fallowing the prescribed instructions for
starting and operating the engine.
Troubleshooter generally associates
certain troubles with a particular system or
assembly
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5. Engine fails to start
ln general, the troubles that prevent an
engine from starting are
(1) the engine can neither be cranked
nor barred over
(2) the engine cannot be cranked, but it
can be barred over
(3) the engine can be cranked, but it still
fails to start.
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6. Engine do not start for fuel system
Problem
 Empty fuel tank
 Fuel is old, dirty, or
contaminated
 Faulty wiring and
connection problems
in the fuel system
 Fuel pump not
working
 Fuel supply hose
damaged, distorted,
or improperly
attached
Solution
 Fill-up the fuel tank
 Change the fuel
 Check and repair
 Service the pump
 repair or replace
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7. For Petrol engine
Problem
 Fuel pump not work
 Fuel pump pressure
low
 Fuel line lickage
 Carburetor does no
work
 If EFI engine injector
not work
 Injector pressure low
Solution
 Fuel pump repair
 Fuel pump repair
 Fuel line repair
 Carburetor serving
 Injector change
 Injector change
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8. Carburator fuel system
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9. EFI Fuel system
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10. For Diesel engine
Problem
 Fuel pump not work
 Fuel filter highly jam
 High pressure pump not
work
 Injector not work or
pressure very low
 Fuel line damage or lickage
 Air lock
Solution
 Fuel pump servicing
 Fuel filter change
 Pump servicing
 Injector change
 Fuel line repair or replace
 Check the fuel line
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11. Diesel fuel system
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12. Engine do not start for Ignition system
Problem
 Battery is undercharged
 Ignition switch faulty
 Ignition coil not
functional
 Distributor not functional
 High-tension lead faulty
 faulty spark plugs
 Loose plug wires
Solution
 Recharge the battery
 Ignition switch repair
 Ignition coil replace
 Checked and repair
 Replace the high-tension
lead
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13. Spark Ignition system
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14. Engine do not start for Starting
System
problem
 Battery is
uncharged
 Starting motor not
work
 Starter solenoid
not work
 Starter relay not
work
 Loss wire
connection
Solution
 Battery charge
 Motor repair
 Repair solenoid
 Starter relay
change
 Check wire
connection
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15. Starting System
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16. Engine do not start for
lubrication system
Problem
 Main oil pump not
work
 Oil filter full jam
 Engine oil
pressure gauge not
work
 If use low quality oil
Solution
 Oil pump change
 Oil filter change
 Oil gauge change
 change oil
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17. Lubricating system
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18. Engine Can Be Cranked, but Fails
to Start
 Possible causes:
 Fuel supply hose damaged,
distorted, or improperly attached
 Fuel tank empty
 Fuel filter is clogged up
 Fuel is old, dirty, or contaminated
 Fuel supply hose damaged,
distorted, or improperly attached
 Closed fuel tank vent
 Inoperative, or clogged
thermostat
 Wrong engine oil
 Spark plugs defective, wrong,
plugged, or incorrect spark-plug
gap
Solution
 Fuel supply hose change
 Fill-up the fuel tank
 Filter change
 Change the fuel
 Servicing the fuel system
 Clear the vent
 Change the spark plug
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19. Engine start but not run smoothly
Problem
 Compression lick
 Engine head gasket
lick
 Piston ring defect
 Ignition coil defect
 Spark plug defect
 Injector defect
 Air filter jam
 If EFI(Electronic Fuel
Injection)engine
sensors defect
Solution
 Compression ring
change
 Head gasket change
 Piston ring change
 Ignition coli change
 Air filter change
 Injector change
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20. Engine knocks
Problem
 clogged Carburetor
 Ignition Distributor problems
 plugged fuel Injectors
 Valve timing fails, or faulty
 failed or loose timing belt
tensioner
 lean air-to-fuel mixture
 using fuel of lower than
recommended Octane Rating
Solution
 Servicing the
 carburetor
 Change distributor or
servicing
 Change injector
 Adjust timing belt setting
 Adjust ideal speed
setting
 Change the fuel
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21. Engine knocks
Problem
 Anti-Knock sensors
malfunction
 Engine is too hot
 Carbon deposits in the
combustion chamber, pistons
 Faulty or defective main
crankshaft bearings
 water pump bearing is worn
out
 Flywheel is broken or has
cracks
Solution
 Sensor change
 Check thermostat
 Clean carbon from
combustion chamber ,
piston
 Change main bearing
 Change water pump
bearing
 Fly wheel change
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22. Engine smokes
Problem
 engine is burning oil
 worn or broken piston rings
 worn valve guide or valve
guide seals
 leaking head gasket
 broken or cracked engine
head
 Air/fuel mixture is too rich
 leaky fuel injector

Solution
 Change the oil grade
 Change piston ring
 Change valve guide or
seals
 Change head gasket
 Change or servicing engine
head
 Change injector
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23. Thanks To ALL
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24. Any question ???????
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