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Elements and Performance Criteria

1. Identify and confirm effects of fault in carburetted fuel system
   • Objective of analysis and evaluation is determined from workplace instructions
   • Specifications for carburetted fuel system are accessed and interpreted
   • Details of fault are examined and available preliminary information is documented
   • Effects of fault are identified and confirmed from direct and indirect evidence
   • Hazards associated with the work are identified and risks are managed according to safety and environmental requirements
2. Prepare for fault analysis
   • Evaluative criteria are developed or adopted to meet the objective of analysis and evaluation
   • Analytical and evaluative methodology are developed or identified from technical information
   • Testing equipment is prepared according to manufacturer and workplace procedures
   • Tools and materials required to support diagnostic procedure are selected and checked for serviceability
   • Possible causes of fault are identified from analysis of technical support information and available on-board diagnostic systems
3. Carry out analysis and determine repair and performance enhancement strategies
   • Selected analytical and evaluative methodology is followed according to manufacturer and workplace procedures
   • Tests are carried out according to manufacturer and workplace procedures, and safety and environmental requirements
   • Analytical and other diagnostic findings are verified, as required, by using reliable alternative or optional processes
   • Analytical findings and results are assessed against evaluative criteria
   • Valid conclusions are drawn from available evidence and documented according to workplace requirements
   • Options for responding to analysis and evaluation objective are determined from further research of technical support information
   • Repair or modification method is selected and documented
4. Conduct repairs and implement performance improvement strategies
   • Repair tools and materials are selected and prepared
   • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, team requirements, and safety and environmental requirements, and without causing damage to other components or systems
   • Post-repair testing and vehicle start-up are carried out to ensure performance and operation are to team requirements
5. Complete work processes
   • Tools and equipment are cleaned, maintained and prepared for future use, and stored according to manufacturer specifications and team requirements
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored and problems reported to appropriate personnel according to team requirements
   • Workplace documentation is processed according to team requirements
6. Identify and confirm effects of fault in carburetted fuel system
   • Objective of analysis and evaluation is determined from workplace instructions
   • Specifications for carburetted fuel system are accessed and interpreted
   • Details of fault are examined and available preliminary information is documented
   • Effects of fault are identified and confirmed from direct and indirect evidence
   • Hazards associated with the work are identified and risks are managed according to safety and environmental requirements
7. Prepare for fault analysis
   • Evaluative criteria are developed or adopted to meet the objective of analysis and evaluation
   • Analytical and evaluative methodology are developed or identified from technical information
   • Testing equipment is prepared according to manufacturer and workplace procedures
   • Tools and materials required to support diagnostic procedure are selected and checked for serviceability
   • Possible causes of fault are identified from analysis of technical support information and available on-board diagnostic systems
8. Carry out analysis and determine repair and performance enhancement strategies
   • Selected analytical and evaluative methodology is followed according to manufacturer and workplace procedures
   • Tests are carried out according to manufacturer and workplace procedures, and safety and environmental requirements
   • Analytical and other diagnostic findings are verified, as required, by using reliable alternative or optional processes
   • Analytical findings and results are assessed against evaluative criteria
   • Valid conclusions are drawn from available evidence and documented according to workplace requirements
   • Options for responding to analysis and evaluation objective are determined from further research of technical support information
   • Repair or modification method is selected and documented
9. Conduct repairs and implement performance improvement strategies
   • Repair tools and materials are selected and prepared
   • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, team requirements, and safety and environmental requirements, and without causing damage to other components or systems
   • Post-repair testing and vehicle start-up are carried out to ensure performance and operation are to team requirements
10. Complete work processes
    • Tools and equipment are cleaned, maintained and prepared for future use, and stored according to manufacturer specifications and team requirements
    • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
    • Tools and equipment are checked and stored and problems reported to appropriate personnel according to team requirements
    • Workplace documentation is processed according to team requirements

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.

Safety and environmental requirements must include:	work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for working with petrol fuel systems environmental requirements, including procedures for trapping, storing and disposing of petrol fuel released during repairs or testing.
Analytical and evaluative methodology must include:	diagnostic process sequence of process tests testing equipment.
Repair or modification method must suit:	operating conditions controlling body rules, category rules and supplementary regulations financial implications.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

analyse and repair faults in the performance of the carburetted fuel systems of two different competition vehicles, including:

two of the following faults:

rough running

under or over fuelling

contamination or leaks

one of the following faults:

fuel cells venting

fuel pump pressure and/or flow regulation

conduct post-repair checks on the above fuel systems.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) and environmental requirements relating to analysing and repairing performance carburetted fuel systems, including procedures for working with petrol fuel systems

environmental requirements, including procedures for trapping, storing and disposing of petrol fuel released during repairs or testing

types, function, operation and limitations of carburetted fuel systems and components, including:

properties of fuels used in the motor sport industry, including compatibility with carburetted fuel system components

fuel system components, including:

rollover valves

fuel cells

fuel lines

breathers

pickup pumps

main pumps

filters

fuel pots, surge tanks and collector tanks

pressure and temperature sensors

multi-barrel carburettors, including:

two-barrel and four-barrel carburettors

two-stage carburettors, including vacuum and mechanical control of second stage

diagnostic testing procedures of performance carburetted fuel systems, including:

fuel pump pressure, volume and vacuum testing

testing for air leaks

cold-start enrichment testing

exhaust gas analysis

procedures for repair and improvement of performance carburetted fuel systems, including:

fuel pump installation

carburettor dismantling, cleaning, repair and reassembly

carburettor removal, replacement and adjustment

post-repair testing procedures of performance carburetted fuel systems.

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