AHMI1643 Mechanical Engineering: Assessment 1 - Questioning Analysis

This document contains a completed written assessment for a mechanical engineering unit, focusing on the analysis of engine and fuel system faults. The assessment covers various aspects, including personal protection equipment, safety precautions when working around engines and cooling systems, handling of engine oil and coolant, and waste disposal methods. It includes true/false questions on diesel fuel and diagnostic charts, as well as multiple-choice questions on diagnostic approaches. The student's responses demonstrate an understanding of the safety protocols, diagnostic procedures, and the importance of critical thinking in identifying and addressing engine and fuel system issues. The assignment is an open-book assessment, requiring the student to answer questions in their own words. The assessment also covers topics such as flammable liquids and the use of safety data sheets. The student's work is evaluated based on the elements, performance criteria, performance evidence, and knowledge evidence relevant to the unit of competency.

Assessment 1 – Questioning – Written Assessment
Student Name Gurpal Singh Student ID Number AHMI1643
Unit Start Date Unit End Date
Assessment Due Date Date Submitted
This cover sheet is to be completed by the student and assessor and used as a record to determine student
competency in this assessment task
The assessment process and tasks were fully explained. Yes / No
I am aware of which evidence will be collected and how. Yes/ No
I am aware of my right to appeal an assessment decision. Yes / No
I am aware that I can locate the RTOComplaints and Appeals Policy and Procedureon their
website at (insert website address)
Yes / No
I have discussed any additional educational support or reasonable adjustments I require in order to
undertake this assessment with the Student Support Services Officer and Trainer / Assessor, (if
applicable). e.g. Student Handbook and Access and Equity Policy(insert website address)
Yes / No
I have access to all required resources? Yes / No
Cheating & Plagiarism Declaration
Student Declaration: In accordance with the RTO’sPlagiarism Policy, I hereby acknowledge by signing this
declaration that I have not cheated or plagiarised any work regarding the assessment tasks undertaken in this unit
of competency except where the work has been correctly acknowledged.
NOTE: Student must sign this prior to submitting their assessments to the assessor
Signature Gurpal Singh Date: ______ / ______ / 20______
Assessment Results Satisfactory or Not YetSatisfactory
(Please circle the assessment result for this task)
Feedback to Student - Please provide general feedback on the Student’s performance
Student Declaration: - I verify that the work completed
is my own and that I was adequately informed of the
assessment process prior to commencing this
assessment task.
Assessor Declaration: - I verify that I have adequately
explained and negotiated the assessment tasks with the
student prior to commencing assessment.
Student Signature : Gurpal Singh Assessor Signature
Date Date
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Context and Conditions of Assessment
This assessment will ensure that the elements, performance criteria, performance evidence and knowledge
evidence required, and conditions are adhered to demonstrate competency in this unit assessment task.
 Read the assessment carefully before commencing.
 This is an open book assessment and will be conducted at the RTO address.
 Your Assessor will use the assessment criteria in this document and will provide feedback / comment.
 You must answer all the questions in the assessment tasks in your own words and own handwriting.
 This assessment will be required to be completed in 16 hours
 Your Trainer / Assessor will inform you of the due date for this assessment task.
 Your Assessor will grade as either S – Satisfactory or NS – Not Satisfactory for the assessment. In all
cases your Assessor will provide you with feedback.
 Only when all assessment tasks have been graded as S – Satisfactory you will be deemed C – Competent
in the final result of the unit of competency; if you do not satisfactorily complete all the assessment tasks
you will be deemed NYC – Not Yet Competent.
Re-Assessment Conditions
 If the evidence is graded as NS – Not Satisfactory you will be required to re-submit the evidence. In this
case, you will be provided with clear and constructive feedback based on the assessment decision so that
they can improve your skills / knowledge prior to reassessment.
 Where a ‘NS – Not Satisfactory’ judgement is made, you will be given guidance on steps to take to improve
your performance and provided the opportunity to resubmit evidence to demonstrate competence. The
assessor will determine and discuss the reasons for NS –Not satisfactory on any of the criteria and will
assess you through a different method of assessment e.g. verbal/oral questioning, problem solving
exercises.
 You will be notified within 10 working days of undertaking an assessment of their result in achieving
competency
o If a student does not complete the assessment, they should notify their trainer as to why they did
not complete the assessment and if due to illness, a medical certificate must be produced. “This
process is detailed more in the “Training and Assessment Policy and Procedure”
o In the above scenario, student will be given an opportunity for reassessment within 5 working days
with no reassessment fee charged.
o Students who are deemed to be Not Yet Competent (NYC) will be provided with information
identifying the areas in which they failed to achieve competency. Students will then have the
opportunity to repeat the assessment task within 5 working days of notification with no
reassessment fee charged.
o If a student is deemed NYC in the reassessment or if the student did not approach the RTOwithin
five working days with a valid reason for not availing themselves of the reassessment opportunity,
then those students will be given a final chance to re-sit the assessment and will be charged at
$200.00.
o After this no further reassessment attempt will be provided to the student and the student will be
required to repeat the whole unit with full fee for the unit as per the fees policy of the RTO. The
student will be made aware of the impact of repeating the unit may have on their student visa.
(International students only)
o If a student is found to be cheating or plagiarising their assessment, a $200.00 reassessment fee
will be charged for reassessing the assessment within 5 working days.
o If the student is found to be plagiarising or cheating again after conclusion of the Intervention
meeting with the Course Co-ordinator, the matter will be referred to the CEO / Operation Manager
which may result in the suspension or cancellation of their enrolment
o The RTOhas intervention strategies, including student support services available to enable
students to complete qualification in the expected time frame. Students at risk of not completing
within this time frame are identified as early as possible and an intervention strategy is put in place.
The RTO will ensure access to:
 Automotive repair workplace or simulated workplace
 Workplace instructions
 Manufacturer light vehicle engine and fuel system specifications
 Three [3] different light vehicles with engine and fuel system faults
 Diagnostic equipment for light vehicle engine and fuel systems
 Tools, equipment and materials appropriate for analysing and evaluating light vehicle engine and fuel
systems.
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Evidence to be submitted by the student: -
 Completed written responses to the questions in the assessment task
Assessment Decision Making Rules
Your assessor will assess the evidence submitted for the following elements, performance criteria, performance
evidence and knowledge evidence to confirm that the student evidence submitted demonstrates validity,
sufficiency, authenticity and confirms current skills and knowledge relevant to the unit of competency.
Your assessor will be looking for the following in this assessment task: -
 Work health and safety (WHS) and occupational health and safety (OHS) requirements relating to
analysing and evaluating faults in light vehicle engine and fuel systems, including procedures for working
with:
o Hot engine components and rotating engine components
o Hazardous substances, including:
 Diesel fuel
 Petrol fuel
 Engine oil and coolants
 Environmental requirements, including procedures for trapping, storing and disposing of fluids released
from engine and fuel systems
 Principles and processes involved in planning and implementing analysis and evaluation of light vehicle
engine and fuel system faults
 Design and planning of diagnostic procedures of light vehicle engine and fuel system faults, including
procedures for diagnosing:
o Hydraulic faults
o Mechanical faults
o Electrical faults
 Procedures for analysing and evaluating light vehicle engine and fuel system faults, including:
o System failure analysis
o Component failure analysis
 Types, functions, operation and limitations of the following engine and fuel systems:
o Petrol engines
o Diesel engines
o Petrol fuel systems
o Diesel fuel systems
 Testing procedures for light vehicle engine and fuel systems, including:
o Engine performance under load
o Fuel flow and pressure
o Cooling system performance under load
o Oil pressure
o Exhaust flow
 Types, functions, operation and limitations of diagnostic testing equipment required to analyse and evaluate
faults in light vehicle engine and fuel systems
 Procedures for documenting and reporting the analysis and evaluation process
 Requirements of Australian Design Rules (ADRs) relating to light vehicle engine and fuel systems.
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Assessment 1 – Questioning
Written Assessment
1. Identify five (5) important items of personal protection you will need when analysing and evaluatingengine
and fuel system faults.
1 Skin protection
2 Clothing protection
3 Safety boots
4 Hand protection gloves
5 Hearing protection
2. What safety precautions must be observed when working around engines?
Ans:
 “Make sure long hair is tied back.
 Wear PPE
 Remove rings, metal watches, bracelets and any loose clothing before beginning work.
 Keep hands clear of all moving parts.
 Engine fans can fling objects, start unexpectedly, strike you, or catch dangling leads or strings.
Take extreme caution.””
3. What precautions are needed when draining the engine oil from an engine?
Ans: precautions are needed when draining the engine oil from an engine
 protect the body from the hot engine oil
 Put the oil in proper oil pan
 When oil starts pouring down, stay away from it
4. Describe the safety precaution that must be observed before removing the radiator cap or disconnecting
any component of a hot cooling system?
Ans:safety precaution that must be observed-
 When opening the radiator cap, use a protective glove and rag”
 Never open the radiator cap while the engine is hot.
 Never pour cold water over the outside the radiator.
5. Explain the dangers which technicians should be aware of while working on cooling systems?
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Ans:
 “Cooling systems in vehicles are pressurized to prevent boiling when the engine temperature
exceeds 100°C. A sudden loss of pressure, from component failure or an open cap, can cause the
hot liquid to boil instantly and be expelled through the opening. Radiators that are too hot can be
very dangerous
 hand, arms, tools and testing equipment and wire being stuck in drive pulleys, belts and cooling fan”
6. What four (4) handling precautions with coolant containing corrosion inhibitors and Antifreeze/Anti-boil
solutions
1 If paint spills on it, wash it immediately with water
2 Inhibitors must not be taken internally
3 In the event that it accidentally splashes or splits on your skin, wash it off as soon as possible
4 Maintain adequate ventilation and avoid inhaling vapours
True or False question
7. High-pressure atomised diesel fuel is extremely dangerous, and no part of the body should be in danger of
contacting it.
☒True or ☐False
True or False question
8. Diesel fuel oil is a known carcinogen, that is a cancer-causing agent. Always wash hands after contact with
it.
☒True or ☐False
9. How should waste engine oil and coolant be stored and disposed?
“All waste oils should be placed in secure, clearly labelled drums or tanks that are bunded and undercover.
If stored in a double skinned tank there is no need for bunding, however if stored in a single skinned tank
then the tank must be bunded. A licensed contractor should remove and store waste engine oil and coolant
10. How should flammable liquids released from the petrol fuel system be stored and disposed?
Ans:For flammable and combustible liquids, use approved equipment, including labelled safety containers.
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11. When handling, trapping, storing and disposing of engine oil, coolant and flammable liquids released from
the vehicle, which document should you use to find this information?
Ans: Safety data sheet is used when handling, trapping, storing and disposing of engine oil, coolant and
flammable liquids released from the vehicle
True or False.
12. Symptom-based diagnostic charts focus on a definition of the problem and offer a list of possible causes of
the problem.
☒True or ☐False
True or False.
13. Critical thinking is a way to evaluate something with bias.
☐True or ☒False
True or False.
14. Good critical thinking begins the process of problem solving by observation.
☒True or ☐False
Multiple choice. Circle the correct answer.
15. The first step in a logical diagnostic approach is to _________?
A. Gather information.
B. Verify the problem.
C. Research the information.
D. None of these answers are correct.
True or False.
16. Before covering the typical engine or fuel system complaints, it is important to remind you to get as much
information as possible about the complaint from the customer. Then road test the vehicle to verify the
complaint.
☒True or ☐False
True or False.
17. Always follow the vehicle manufacturer’s procedures when diagnosing an engineor fuel system faultsystem.
☒True or ☐False
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18. When diagnostic aids are not available or prove to be ineffective, good technicians conduct a visual
inspection and then take a logical approach to finding the cause of the problem. This relies on critical
thinking skills as well as system knowledge. Logical diagnosis follows whatseven [7] steps?
1 Verify the problem
2 Initial check
3 Analyse the problem
4 Visual inspection
5 Diagnosis the problem
6 Fix the problem
7 Verify the repair
19. How should you analyse and evaluate what the problem is and when it occurs?
Ans: “Whenever a problem arises, address it as soon as possible while keeping in mind other factors that
may be involved. Once the problem is detected, you will be able to provide valuable information to the repair
technician that aids in the troubleshooting process”
True or False.
20. Engine oil pressure should be tested with the engine cold.
☐True or ☒False
21. Describe the proper steps to follow when testing and diagnosing an engine oil pressure fault.
Ans: “Before removing the oil pressure switch, make sure the engine is cool. In the next step connect the
oil pressure test kit and check the engine oil level before starting the vehicle and allowing it to reach
operating temperature than start the engine and check the reading. Low readings indicate blocked filters,
worn oil pumps, etc., and high readings indicate faulty pressure relief valves or other blockages.”
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Multiple choice. Circle the correct answer.
22. Once the compression, cylinder leakage, vacuum, and power balance tests are performed, further testing
can be done to evaluate the engine’s condition. For example, an engine with good relative compression but
high cylinder leakage past the rings is typical of a high-mileage worn engine. This engine would have what
symptoms?
A. Excessive blowby.
B. Lack of power.
C. Poor performance.
D. All these answers are correct.
23. Before analysing and evaluatingfaults on the fuel injection and engine control systems, you should certain of
the five [5] electrical engine components and systems are working correctly. What are they?
1 Charging and starting system
2 Fuse
3 Wiring harness links
4 Battery
5 Engine light
Multiple choice. Circle the correct answer.
24. What could a leak in the fuel regulator or the fuel pump check valve that allows the fuel pressure to slowly
bleed down after the engine shut down cause?
A. Hard starting.
B. Surging at high speed.
C. Detonation.
D. Excessively lean LTFT.
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Multiple choice. Circle the correct answer.
25. Analysing and evaluatinga wet compression test on an engine after a dry compression test revealed low
compression on one cylinder. If the compression on the low cylinder rises, it indicates __________?
A. Leaking valves.
B. Worn rings.
C. Worn camshaft.
D. All answers are correct.
26. A good technician should not limit his action only to the exchange of parts, but they should also analyse and
evaluate the cause of the failure. Analyse and evaluate the following engine component failures.
Damage caused by pre-ignition
Crankshaft bearing spun
Piston pin retaining clip failure
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Piston slap due to excessive piston clearance
loose timing chain
Worn crankshaft bearing due to oil starvation
Engine damage due to a broken timing belt
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Valve bent due to incorrect valve timing
All carbon is removed from a piston and combustion
chamber when the combustion chamber is cranked or
the head gasket leaks, causing coolant to leak
27. When analysing and evaluatingunequal cylinder power balance results, what are five [5] engine or fuel
system components this?
1 Cracked combustion chamber
2 Bent valves
3 Inlet manifold leaking
4 Worn piston ring
5 Leaking head gasket
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28. When analysing and evaluating engine rod bearing noise, what type of noise will this procedure?
Ans: knocking noise
29. A fuel pressure test reveals higher than normal fuel pressure. Describe the steps you would take to analyse
and evaluatethis concern to determine the root cause of the problem?
Ans: It is likely that the fuel filter is clogged when fuel pressure is higher than normal. Fuel filter needs to be
changed and tested again
Multiple choice. Circle the correct answer.
30. When analysing and evaluatinga no start/no fuel pressure condition. The technician connects a test-light to
the fuel pump positive terminal, but there is no voltage when the engine is cranked by the starter. What
could be the cause of this problem?
A. Defective neutral safety switch.
B. Bad fuel pump ground.
C. Defective fuel pressure regulator.
D. Defective fuel pump relay.
Multiple choice. Circle the correct answer.
31. When analysing and evaluatinga low fuel pressure problem. The fuel pump current test reveals higher than
normal current flow. What could be the cause of this problem?
A. Clogged fuel filter.
B. Fuel pump ground wire loose or corroded.
C. A weak fuel pressure regulator.
D. Low fuel level.
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32. Today’s vehicle engines can be classified in several ways depending on “What” design features? Name the
design features and give a brief description.
Ans:
 “
 Valve mechanism- This refers to whether the engine has overhead valves (OHV) or overhead camshafts
(OHC). It can also relate to the number of valves. Some four-cylinder engines in particular have four
valves per cylinder and so are referred to sixteen valve engines.
 Cylinder arrangement- An engine can have cylinders which are in-line, horizontally opposed or V-type.
 Cubic Capacity- This is also referred as piston displacement. It is the size of engine, being the total
volume, in litres, of all cylinders. A small passenger car engine could have the capacity of 1.5 litres.
While a large passenger or light commercial vehicle could have a capacity of 4 litres or more.
 Number of camshafts- Some in-line engines have a single overhead-camshaft (SOHC). Other in-line
engines have two overhead-camshafts and referred to as double overhead-camshaft engines (DOHC).
V-type engines have two overhead-camshafts; they can also be designed with four overhead-
camshafts. Four overhead-camshafts are referred to as Quad cams.
 Type of cooling- Engine can be liquid-cooled or Air-cooled. Almost all passenger cars and light
commercial vehicles are liquid-cooled.
 operating cycle: The operating cycle of an engine can be a four-stroke or a two-stroke cycle. Passenger
and light commercial vehicles have four-stroke engines but some larger diesel engines are four strokes.
 Type of fuel or fuel System-Engines are designed to run on a particular fuel. This can be petrol,
distillate, liquefied petroleum gas (LPG) or natural gas for vehicles. Dual-fuel engines can run on petrol
or gas. Petrol engines fitted with electronic fuel injection systems are often called EFI engines with a
carburettor are called carburettor engines.
 Turbocharging and supercharging- Some engines are fitted with an exhaust driven turbocharger, and so
are referred to as turbocharged engines. Other engines have a supercharger that is engine driven.
Turbocharging and supercharging enable air to be forced into the cylinder and this increases the engine
performance”
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33. Describe the four-stroke cycle.
“”An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and
exhaust. This is called four-stroke cycle. As the piston moves during each stroke, it turns the crankshaft.
Each movement of the piston is called a stroke. Four strokes — down, up, down, up — complete the cycle
that creates the power to drive the engine. This process is aptly called the four-stroke power cycle”
Multiple choice. Circle the correct answer.
34. To have an efficient-running engine there must be the correct amount of fuel. To provide this, fuel must be
________.
A. Stored and then pumped out of storage.
B. Fuel must be filter.
C. Delivered to the fuel injectors.
D. All the answers are correct.
True or False.
35. Diesel engines produce more torque than petrol engines.
☒True or ☐False
True or False.
36. The fuel system is designed to prevent fuel vapours from entering the atmosphere.
☒True or ☐False
37. Name the four [4] different types of petrol fuel systems?
1 multipoint fuel injection.
2 Central port injection
3 Direct injection
4 throttle body injection.
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Multiple choice. Circle the correct answer
38. There is a ________ on common-rail fuel injection systems that is responsible for controlling fuel delivery,
operating the injectors and adjusting injection timing.
A. Sensor.
B. BCM.
C. ECM.
D. Actuator.
39. On the common-rail fuel injection system, what does the high-pressure stage consist of?
Ans: High-pressure stage consist of
 high pressure injection pump
 injectors
 High pressure fuel line
Multiple choice. Circle the correct answer
40. The fuel delivered from the pump to the common rail is at high pressure (up to ________) and a heavy-
wall tube is used to contain the pressure.
A. 1300 bar.
B. 18855 psi.
C. 130000 kPa.
D. All the answers are correct.
Multiple choice. Circle the correct answer
41. Which of the following best describes the type of pump used with typical Bosch common-rail fuel injection
system?
A. Rotary distributor.
B. In-line plunger.
C. Radial piston.
D. Opposed plunger.
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42. Explain the purpose of the common-rail in the common-rail fuel injection system?
Ans: “Purpose of the common-rail in the common-rail fuel injection system is that Under extremely high
pressure, it receives fuel from the pump and distributes it to the injectors.The rail serves as a fuel
accumulator to maintain a relatively constant pressure at all fueling rates used by the engine. From the rail,
the fuel is supplied to the injectors via high pressure pipes. The ECU generates current pulses which
energize a solenoid valve in each injector in sequence”
Multiple choice. Circle the correct answer
43. What type of injectors are used in a common-rail fuel injection system?
A. Pintle injectors.
B. Poppet injectors.
C. Multi-orifice injectors.
D. Electrohydraulic injectors.
Multiple choice. Circle the correct answer
44. What is used to switch an electrohydraulic injectors (EHI) used in a common-rail fuel injection system?
A. Pulse width modulated signal.
B. Analogue voltage charge.
C. Fuel volume in accumulator.
D. Hydraulic distributor head.
45. Why are the high-pressure fuel lines in a common-rail fuel injection system different to other diesel
systems?
Ans: The common rail system gives high pressure fuel to injector and more flexible control as compared to
other diesel systems
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Multiple choice. Circle the correct answer
46. When a common-rail fuel injection system high-pressure fuel lines is removed for any reason, which of the
following steps is required by most engine OEMs?
A. Remove and replace the line nuts.
B. Torque the line nuts to spec.
C. Dress the sealing nipples on a grinder.
D. Replace the high-pressure fuel lines.
True or False.
47. Engine oil pressure testing should be tested with the engine cold?
☐True or ☒False
True or False.
48. An oil pressure test is used to determine the wear of an engine’s parts?
☒True or ☐False
Fill in the gaps
49. Complete the following statement about oil pressure testing using the following words.
Words: Adapters, Clearances, Contaminated, Faulty, Engine, High-pressure, Hose, Manufacturer’s, Much,
Operating, Problems, psi, Reading, Relief, Run, Running, Screen, Sensor, Viscosity
An oil pressure tester is a gauge with a __high-pressure__________hose attached to it. The scale of the
gaugetypically reads from 0 to 100 __psi__________(0 to 690 kPa. Using the correct fittings and
___adapters_________, the hose is connected to an oilpassage in the ___engine_________block. The
testnormally includes the following steps:
1 Remove the oil pressure ___sensor_________and tighten the threaded end of the gauge’s
____hose________into that bore.
2 _____Run_______the engine until it reaches normal ____operating________temperature.
3 Observe the gauge ____reading________while the engine is ___running_________at about
1,000 rpm and at 2,500 rpm (or the specified engine speed).
4 Compare the readings to the __manufacturers__________specifications.
Excessive bearing ____clearances________ are not the only possible causes for lowoil pressure readings;
others are oil pump-related __problems__________, a plugged oil pickup screen, weak or broken oil
pressure ___relief_________ valve, low oil level, ____contaminated________ oil, or low oil viscosity.
Higher than normal readings can be caused by too muchoil, cold oil, high oil __viscosity__________,
restricted oil passages, and a ___faulty_________ pressure regulator.
True or False.
50. A weak valve spring can be detected with a vacuum test?
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☒True or ☐False
True or False.
51. A restricted exhaust can be detected with a vacuum test?
☒True or ☐False
52. When diagnosing a cylinder that is not producing as much power as other cylinders yet shows normal
cranking compression test results, what test maybe needed?
Ans: Running compression test is needed when diagnosing a cylinder that is not producing as much power
as other cylinders yet shows normal cranking compression test results
Fill in the gaps
53. Complete the following statement about relative compression testing.
Words: Compared, Compression, Cylinder, Draw, Positive, Seconds
A method to quickly and easily determine if each ___cylinder_________ is drawing in and compressing air
is by performing a relative __compression__________ test. By measuring the cranking current with a lab
scope, each cylinder’s draw on the starter motor and battery can be ____compared________ to the other
cylinders. Connect a current clamp around the battery ___positive_________ or negative cable and
configure the scope to measure between 200 and 400 amps. Disable the fuel pump and crank the engine
for 5 to 7 ___seconds_________. A cylinder with low compression will have less current
_____draw_______ than one with good compression.
True or False.
54. A cooling system pressure tester is used to test for leaks in the radiator, hoses, water pump, thermostat,
and engine assembly?
☒True or ☐False
Multiple choice. Circle the correct answer
55. When testing a radiator cap, with the rated pressure applied, the cap should hold that pressure for at least
_____.
A. 30 seconds.
B. 1 minute.
C. 5 minutes.
D. 20 minutes.
56. Describe the process to check for combustion gas leakage into the cooling system?
Ans: “An exhaust gas analyser can detect exhaust fumes from within the cooling system.. Simply hold the
analyser’s probe above the filler neck (with the cap removed), and the analyser will detect any gases present. Do
not put the probe directly into the coolant”
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57. How is an injector balance test performed?
Ans:“The fuel injector balance test is a procedure that measures the amount of fuel delivered by each injector. This
measurement can be done directly or indirectly depending on the method used. It is performed-“
 “Connect a fuel pressure gauge to the fuel rail pressure connection
 connect the scan tool vehicle and select engine
 select functional test than injector balance test
 record the reading”
Multiple choice. Circle the correct answer
58. Testing for a restricted exhaust is done usingan exhaust _____.
A. Pressure gauge.
B. Temperature gauge.
C. Exhaust Gas Analyser.
D. Scan tool.
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Fill in the gaps
59. Complete the following statement about cylinder leakage testing using the following words.
Words: Adaptor, Crankshaft, Compressed, Compression, Escaping, Gauge, Leakage, Measure,
Operating, Pressure, Radiator, Test, Through
If a compression test shows that any of the cylinders are leaking, a cylinder ___leakage_________ test
can be performed to measure the percentage of ___compression_________ lost and to help locate the
source of leakage. A cylinder leakage tester applies compressed air to a cylinder ___through_________
the spark plug hole. The test normally includes the following steps:
1 Make sure the engine is at ___operating_________condition.
2 Remove the __radiator__________cap, oil filler cap, dipstick tube, air filter cover, and all spark
plugs.
3 Rotate the _crankshaft___________with a remote starter button so that the piston of the tested
cylinder is at TDC on its compression stroke. This ensures that the valves of that cylinder are
closed.
4 Insert the threaded ____adapter________on the end of the tester’s air
____pressure________hose into the spark plug hole.
5 Allow the ___compressed_________air to enter the cylinder.
6 Observe the ___gauge_________reading.
7 Listen and feel to identify the source of any ____escaping________air.
60. List five [5] capabilities of a scan tool.
1 The pending code will be displayed
2 Clear the codes
3 Playback live data
4 Graph data
5 Direct trouble code
True or False.
61. A petrol fuel pressure gauge can be used on diesel fuel system?
☐True or ☒False
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Fill in the gaps
62. Complete the following statement about documenting you’re diagnostic finding on the job card.
Words: Clear, Defective, Diagnostic, Documentation, Equipment, Found, Job, Multimeter, Operations,
Problem, Sensor, Technician, Trouble, Write.
The service ___technician_________must document the ____job________card. This means that the
service technician must __write__________(or type) what all was done to the vehicle including
documenting ___defective_________components or conditions that were ___found_________in the course
of the __diognostic__________. The documentationis often called “telling the story” and should include the
following:
 The test ____equipment________used to diagnose the ___problem_________. For example: Used a
scan tool to retrieve C0210/33 R/H/R speed sensor diagnostic ______trouble______code.
 Used a digital ____multimeter________to determine a wheel speed ____sensor________wire was
defective.
 List what parts or service ____operations________were performed. For example: Replaced the wheel
speed wire on R/H/R wheel. Used a scan tool to ____clear________the diagnostic trouble codes and
verify that the system operated correctly.
64. Why is it very important that the Job Card is completed correctly?
Ans:””The job card is meant to ensure that the technician working on the vehicle, has a detailed 'patient' file
which will help ensure that every job is completed professionally and every vehicle receives the technician's
full attention and application. An employee's job card is a vital document that records their entitlements.It
legally empowers the registered households to apply for work, ensures transparency and protects workers
against fraud.The job card is meant to ensure that the technician working on the vehicle, has a detailed
'patient' file which will help ensure that every job is completed professionally and every vehicle receives the
technician's full attention and application”
66. What are all the ADR names and numbers for which all engine and fuel system for all passenger vehicles?
2. “ADR—Definitions and Vehicle Categories
3. ADR—Harmonisation
4. ADR 79/01 emission control for light vehicles 2005
5. ADR 1—Reversing Lamps
6. ADR 2—Side Door Latches and Hinges
7. ADR 3—Seats and Seat Anchorages
8. ADR 4—Seatbelts
9. ADR 5—Anchorages for Seatbelts
10. ADR 6—Direction Indicators
11. ADR 7—Hydraulic Brake Hoses
12. ADR 8—Safety Glazing Material
13. ADR 10—Steering Column”
14. ADR 79/00 emission
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True or False.
67. According to 79/02 Appendix, diagnosis and any normal maintenance necessary shall be performed on
vehicles accepted for testing, prior to measuring exhaust emissions, in accordance with the procedure laid
down in paragraphs 3.1. to 3.7.
☒True or ☐False
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