Automotive Mechatronics Technology  ·  Level 6
Vehicle Engine Maintainance
Chapter 7: Troubleshoot exhaust system
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Chapter Practical Activities

Practical 1: Identify and Label Main Components of a Vehicle Exhaust System

Automotive Mechatronics Technology · Level 6
Vehicle Engine Maintainance
PRACTICAL ASSESSMENT
TIME: 4 HOURS
⬇ PDFCandidate Instructions (Candidate Tool)

Type: Individual

INSTRUCTIONS TO CANDIDATE:
1.  You are required to perform the following task:
i.  Identify and label the main components of a vehicle exhaust system including exhaust manifold, catalytic converter, muffler, resonator, and tailpipe on the provided exhaust system.
2.  You have been provided with the following resources for the practical task:
Tools & EquipmentMaterials
Labeling tags with stringsComplete vehicle exhaust system on a bench
Permanent marker pensMechanic's gloves
Inspection torchSafety boots
Basic hand tools set (wrenches, screwdrivers)Overalls
⬇ PDFResources Required (Cutting List)
S/NItemQuantity
1Complete vehicle exhaust system on a bench1 set per candidate
2Labeling tags with strings10 pcs per candidate
3Permanent marker pens2 pcs per candidate
4Mechanic's gloves1 pair per candidate
5Safety boots1 pair per candidate
6Overalls1 per candidate
7Inspection torch1 pc per candidate
8Basic hand tools set (wrenches, screwdrivers)1 set per candidate
⬇ PDFAssessor Guide
Items to be EvaluatedMarks AvailableMarks ObtainedComments
TASK 1: Identification and Labeling of Exhaust System Components
Wore personal protective equipment: safety boots, overalls, gloves
(Award 1 mark each or zero x 2 = 2 Marks)
2
Prepared working area and selected appropriate tools
(Award 1 mark or zero)
1
Inspected and identified exhaust manifold
(Award 2 marks or zero)
2
Inspected and identified catalytic converter
(Award 2 marks or zero)
2
Inspected and identified muffler
(Award 2 marks or zero)
2
Inspected and identified resonator
(Award 2 marks or zero)
2
Inspected and identified tailpipe
(Award 2 marks or zero)
2
Properly labeled each identified component with tags and permanent marker
(Award 1 mark each for 3 correctly labeled components or zero)
3
Cleaned working area after task completion
(Award 1 mark or zero)
1
Sub-Total17
PRODUCT CHECKLIST
All main exhaust system components correctly identified and labeled (exhaust manifold, catalytic converter, muffler, resonator, tailpipe)
(Award 2 marks for each correctly labeled component or zero)
10
Sub-Total10
GRAND TOTAL27
ASSESSMENT OUTCOME:   ☐ Competent    ☐ Not Yet Competent (competent if at least 50%)

Practical 2: Inspect Exhaust System for Leaks on Vehicle Engine

Automotive Mechatronics Technology · Level 6
Vehicle Engine Maintainance
PRACTICAL ASSESSMENT
TIME: 4 HOURS
⬇ PDFCandidate Instructions (Candidate Tool)

Type: Individual

INSTRUCTIONS TO CANDIDATE:
1.  You are required to perform the following task:
i.  Inspect and locate leaks on the exhaust system of a petrol engine vehicle and mark leak points using appropriate detection methods.
2.  You have been provided with the following resources for the practical task:
Tools & EquipmentMaterials
FlashlightOverall/Dust coat
Smoke machine (exhaust leak detector)Safety boots
Wrench setHand gloves
Screwdriver setVehicle with petrol engine and exhaust system installed on a hoist or ramp
Marking chalk or grease pencilWheel chocks
Soapy water spray bottle
⬇ PDFResources Required (Cutting List)
S/NItemQuantity
1Safety boots1 Pair per Candidate
2Overall/Dust coat1 per Candidate
3Hand gloves1 Pair per Candidate
4Flashlight1 per 5 Candidates
5Smoke machine (exhaust leak detector)1 per 10 Candidates
6Soapy water spray bottle1 per Candidate
7Wrench set1 set per Candidate
8Screwdriver set1 set per Candidate
9Marking chalk or grease pencil1 per Candidate
10Vehicle with petrol engine and exhaust system installed on a hoist or ramp1 per 4 Candidates
11Wheel chocks1 set per Vehicle
⬇ PDFAssessor Guide
Items to be EvaluatedMarks AvailableMarks ObtainedComments
TASK 1: Preparation and Safety
Wore Personal Protective Equipment: Safety boots, overall/dust coat, gloves
(Award 1 mark each or zero x 3 = 3 Marks)
3
Parked vehicle on level ground and applied wheel chocks
(Award 2 marks or zero)
2
Raised vehicle safely on hoist or ramp
(Award 2 marks or zero)
2
Sub-Total7
TASK 2: Leak Detection Procedure
Switched on smoke machine and confirmed functionality
(Award 2 marks or zero)
2
Applied smoke into exhaust system and observed for leak points
(Award 3 marks or zero)
3
Sprayed soapy water on suspected joints and observed bubble formation indicating leaks
(Award 3 marks or zero)
3
Used flashlight to visually inspect exhaust joints, clamps, and pipes for cracks or holes
(Award 2 marks or zero)
2
Marked all detected leak points clearly with chalk or grease pencil
(Award 3 marks or zero)
3
Sub-Total13
TASK 3: Post-inspection and Reporting
Tightened any loose clamps or fasteners observed during inspection
(Award 2 marks or zero)
2
Cleaned work area and removed tools safely
(Award 2 marks or zero)
2
Reported and documented all leak locations for repair
(Award 3 marks or zero)
3
Observed general safety and housekeeping procedures throughout
(Award 3 marks or zero)
3
Sub-Total10
PRODUCT CHECKLIST
All exhaust leak points accurately identified and clearly marked
(Award 5 marks or zero)
5
No damage caused to exhaust system during inspection
(Award 3 marks or zero)
3
Inspection completed within allocated time
(Award 2 marks or zero)
2
Sub-Total10
GRAND TOTAL40
ASSESSMENT OUTCOME:   ☐ Competent    ☐ Not Yet Competent (competent if at least 50%)
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🔒Test exhaust gas emissions of a petrol vehicle enginePractical 3
🔒Remove and replace damaged exhaust pipes on a petrol engine vehiclePractical 4
🔒Inspect and Replace Exhaust Manifold Gasket on a Petrol EnginePractical 5
🔒Clean and Inspect Catalytic Converter for Blockages or DamagePractical 6
🔒Check and Replace Oxygen Sensors in Vehicle Exhaust SystemPractical 7
🔒Inspect and Repair Vehicle MufflerPractical 8
🔒Perform Exhaust System Pressure Test to Identify Blockages or LeaksPractical 9
🔒Reassemble and Test Exhaust System FunctionalityPractical 10