Diploma in Fuel and Oil System Repair
Why this certificate program?
The Diploma in Fuel and Oil Systems Repair
This course provides you with the essential skills and technical knowledge to diagnose, repair, and maintain critical fuel and lubrication systems in a wide range of vehicles and machinery. Master electronic injection techniques, pump calibration, fault analysis, and safe fluid handling, preparing you for a successful future in the automotive and industrial maintenance sectors.
Differential Advantages
- Advanced Diagnostics: Learn to use state-of-the-art diagnostic tools to accurately identify faults.
- Specialized Repair: Master repair techniques for fuel and oil system components, including injectors, pumps, and filters.
- Preventive Maintenance: Develop preventive maintenance plans to extend the lifespan of systems and avoid costly breakdowns.
- Safety and Regulations: Understand safety regulations and procedures for the proper handling of fuels and lubricants.
- Laboratory Practices: Apply the knowledge acquired in laboratory practices with real equipment and interactive simulations.
- Modality: Online
- Level: Diplomado
- Hours: 800 H
- Start date: 30-09-2026
Availability: 1 in stock
Who is it aimed at?
- Automotive technicians and diesel mechanics who want to specialize in modern injection and lubrication systems.
- Automotive engineering students and related fields seeking practical and up-to-date knowledge of fuel and oil systems.
- Fleet managers and heavy-duty workshops who need to optimize maintenance and reduce downtime.
- Entrepreneurs and workshop owners interested in expanding their service offerings with specialized system repairs.
- Automotive industry professionals seeking a recognized certification to enhance their skills and career opportunities.
Learning Flexibility
Designed for professionals and students: 24/7 accessible online modules, interactive discussion forums and personalized technical support.
Objectives and competencies

Diagnosing and repairing faults in electronic injection systems:
“Use diagnostic tools (scanner, multimeter) to identify faulty components, interpret error codes, and perform functional tests according to the manufacturer’s manuals.”

Maintaining and optimizing the performance of lubrication systems:
“Inspect, diagnose, and adjust operating parameters (pressure, temperature, flow) to ensure optimal lubrication and prevent failures.”

Evaluate and troubleshoot problems in fuel pumps and filtration systems:
“Diagnosing faults with specialized tools (pressure gauges, oscilloscopes), repairing or replacing defective components (pumps, filters, regulators) and verifying correct operation with flow and pressure tests.”

Understand and apply preventive maintenance techniques in fuel and oil systems:
“Schedule, execute, and document inspections, adjustments, and component replacements, minimizing the risk of failures and optimizing system efficiency.”

Perform advanced diagnostic tests on fuel and oil systems:
“Using specialized diagnostic tools (oscilloscope, gas analyzer, high-precision pressure gauges) and interpreting technical data to identify complex faults and optimize performance.”

Restore and calibrate high-precision fuel injectors:
“Using state-of-the-art measuring equipment, applying ultrasonic cleaning techniques, and calibrating according to the manufacturer’s specifications, ensuring optimal engine performance.”
Curriculum - Modules
- Comprehensive Maritime Incident Management: protocols, roles, and chain of command for coordinated response
- Operational Planning and Execution: briefing, routes, weather windows, and go/no-go criteria
- Rapid Risk Assessment: criticality matrix, scene control, and decision-making under pressure
- Operational Communication: VHF/GMDSS, standardized reports, and inter-agency liaison
- Tactical Mobility and Safe Boarding: RHIB maneuvers, approach, mooring, and recovery
- Equipment and Technologies: PPE, signaling, satellite tracking, and field data logging
- Immediate Care of the Affected: primary assessment, hypothermia, trauma, and stabilization for evacuation
- Adverse Environmental Conditions: swell, Visibility, flows, and operational mitigation
Simulation and training: critical scenarios, use of VR/AR, and exercises with performance metrics
Documentation and continuous improvement: lessons learned, indicators (MTTA/MTTR), and SOP updates
- Introduction to Diesel Injection Systems: History, evolution, and regulations.
- Fundamentals of Diesel Combustion: Diesel cycle, combustion parameters, efficiency.
- Components of a Diesel Injection System: Injection pumps, injectors, fuel lines, common rail.
- Types of Injection Systems: Conventional, electronic, common rail, unit injector.
- Diagnostics and Common Faults in Diesel Injection Systems: Error codes, diagnostic tests, data interpretation.
- Automotive Lubrication: Types of lubricants, properties, functions, additives.
- Engine Lubrication Systems: Oil pump, oil filter, oil pan, Conduits.
- Oil Analysis: Interpretation of results, problem identification, predictive maintenance.
- Preventive and Corrective Maintenance of Injection and Lubrication Systems.
- Occupational Health and Safety: Fluid handling, personal protective equipment, environmental regulations.
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- Introduction to Fuel Systems: Types, Components, and Functions
- Principles of Fuel Injection: Mechanical and Electronic Systems
- Troubleshooting Fuel Injection Systems: Tools and Techniques
- Preventive Maintenance of Injectors: Cleaning, Calibration, and Replacement
- Engine Lubrication Systems: Types, Components, and Function
- Diagnosing Lubrication Problems: Pressure, Consumption, and Contamination
- Lubricating Oil Analysis: Interpretation of Results and Corrective Actions
- Lubrication System Maintenance: Oil Change, Filters, and Cleaning
- Fuel and Lubrication Pumps: Diagnosis, Repair, and Replacement
- Environmental Regulations and Safety in Fuel Handling and lubricants.
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- Fuel Systems Fundamentals: Fuel types, properties, additives, and regulations.
- Gasoline Fuel Injection: Single-point and multi-point systems, direct and indirect injection, components, and operation.
- Diesel Fuel Injection: Rotary pump, in-line, common rail, and unit injector systems, components, and operation.
- Lubrication Systems: Oil types, properties, additives, forced and splash lubrication systems, components, and operation.
- Advanced Diagnostics of Gasoline Fuel Systems: Use of oscilloscope, gas analyzer, pressure and flow tests, and data interpretation.
- Advanced Diagnostics of Fuel Systems Diesel: Pressure testing, flow rate testing, injector return line testing, smoke analysis, and data interpretation.
Gasoline Fuel System Maintenance: Injector cleaning, filter replacement, pressure adjustment, and electronic component verification.
Diesel Fuel System Maintenance: Injector calibration, pump cleaning, filter replacement, and electronic component verification.
Lubricant Oil Analysis: Viscosity testing, contaminant testing, wear metal testing, results interpretation, and recommendations.
Electronic Engine Management (EMS) and Fuel Systems: Sensors, actuators, control strategies, scanner diagnostics, and programming.
- Combustion Fundamentals: thermodynamic principles, stoichiometry, fuel types.
- Advanced Analysis of Gasoline Injection Systems: direct and indirect injection, common rail, components and operation.
- Diagnostics of sensors and Actuators in Fuel Systems: flow meters, oxygen sensors, throttle actuators.
- High-Pressure Diesel Injection Systems: common rail, unit injectors, electronic control units (ECUs).
- Maintenance and Repair of Injection Pumps: flow testing, calibration, component replacement.
- Exhaust Gas Analysis: data interpretation, fault identification, combustion tuning.
- Advanced Lubrication Systems: oil types, pumps Oil, filters, oil coolers.
Diagnosing lubrication problems: oil pressure, excessive consumption, leaks.
Oil analysis: contaminant identification, component wear, and oil life determination.
Environmental regulations and emissions control systems: catalytic converters, diesel particulate filters (DPF), exhaust gas recirculation (EGR) systems.
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- System Architecture and Components: Structural design, materials, and subsystems (mechanical, electrical, electronic, and fluid) with selection and assembly criteria for marine environments
- Fundamentals and Principles of Operation: Physical and engineering foundations (thermodynamics, fluid mechanics, electricity, control, and materials) that explain performance and operating limits
- Safety and Environmental (SHE): Risk analysis, PPE, LOTO, hazardous atmospheres, spill and waste management, and emergency response plans
- Applicable Regulations and Standards: IMO/ISO/IEC requirements and local regulations;
- Conformance criteria, certification, and best practices for operation and maintenance
- Inspection, testing, and diagnostics: Visual/dimensional inspection, functional testing, data analysis, and predictive techniques (vibration, thermography, fluid analysis) to identify root causes
- Preventive and predictive maintenance: Hourly/cycle/seasonal plans, lubrication, adjustments, calibrations, consumable replacement, post-service verification, and operational reliability
- Instrumentation, tools, and metrology: Measuring and testing equipment, diagnostic software, calibration and traceability; selection criteria, safe use, and storage
- Onboard integration and interfaces: Mechanical, electrical, fluid, and data compatibility; Sealing and watertightness, EMC/EMI, corrosion protection, and interoperability testing.
Quality, acceptance testing, and commissioning: process and materials control, FAT/SAT, bench and sea trials, go/no-go criteria, and evidence documentation.
Technical documentation and integrated practice: logs, checklists, reports, and a complete case study (safety ā diagnosis ā intervention ā verification ā report) applicable to any system.
- Combustion Fundamentals: Stoichiometry, fuel types, calorific value.
- Gasoline Injection: Single-point and multi-point systems, direct injection (GDI).
- Diesel Injection: Injection pumps, unit injectors, common rail.
- Ignition Systems: Conventional, electronic, coil-on-plug.
- Electronic Engine Control (ECU): Sensors, actuators, control strategies.
- Scanner Diagnostics: Fault codes, parameter reading, actuator testing.
- Exhaust Gas Analysis: Interpretation of results, relationship to engine performance.
- Lubrication Systems: Types of lubricants, oil pumps, filtration.
- Predictive Maintenance: Oil analysis, thermography, vibration analysis.
Environmental regulations: Pollutant emissions, control systems (catalytic converters, particulate filters).
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Career opportunities
- Automotive/Diesel Repair Technician: Diagnosis and repair of fuel injection systems (gasoline/diesel) and lubrication systems.
- Fuel and Oil Systems Specialist at Dealerships: Specialized technical service, warranty, and preventive maintenance.
- Industrial Maintenance Mechanic: Repair and maintenance of fuel and oil systems in heavy machinery, generators, and industrial equipment.
- Service Technician in Transportation Companies: Maintenance and repair of vehicle fleets, fuel efficiency optimization.
- Technical Advisor in Spare Parts Sales: Specialized knowledge to recommend and sell spare parts and components for fuel and oil systems.
- Entrepreneur/Owner’s Workshop: Creation and management of a workshop specializing in fuel and oil system repair.
- Technical Inspector in Vehicle Certification Companies: Verification of the correct functioning of fuel and oil systems to comply with environmental regulations.
- Technician in Fuel Refinery and Distribution Companies: Maintenance and repair of equipment and facilities related to the storage and distribution of fuels and oils.
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Admission requirements

Academic/professional profile:
Degree/Bachelor's degree in Nautical Science/Maritime Transport, Naval/Marine Engineering, or a related field; or proven professional experience in bridge/operations.

Language proficiency:
Recommended functional maritime English (SMCP) for simulations and technical materials.

Documentation:
Updated resume, copy of degree or seaman's book, ID card/passport, letter of motivation.

Technical requirements (for online):
Equipment with camera/microphone, stable connection, ā„ 24ā monitor recommended for ECDIS/Radar-ARPA.
Admission process and dates

1. Online
application
(form + documents).

2. Academic review and interview
(profile/objectives/schedule compatibility).

3. Admission decision
(+ scholarship proposal if applicable).

4. Reservation of place
(deposit) and registration.

5. Induction
(access to campus, calendars, simulator guides).
Scholarships and grants
- Advanced Diagnostics: Master the techniques for precisely identifying faults in fuel and lubrication systems.
- Efficient Repair: Learn best practices for repair and maintenance, optimizing engine performance.
- Cutting-Edge Technology: Delve into Common Rail, direct injection, and intelligent lubrication systems, key components in modern engines.
- Workshop Practice: Apply your knowledge to real-world cases and simulations, developing practical and problem-solving skills.
- Professional Certification: Earn a recognized diploma that will boost your career in the industry Automotive.
Testimonials
This diploma program exceeded my expectations. I gained in-depth theoretical and practical knowledge of fuel and oil systems, from troubleshooting to repairing complex components. Thanks to the training I received, I secured a position as a specialized technician at a leading mechanical workshop, where I apply the skills I learned daily and achieve excellent results in my work.
This diploma program exceeded my expectations. I gained a solid theoretical and practical understanding of marine engine mechanics and maintenance, from the operation of different engine types to advanced diagnostics and troubleshooting. The hands-on workshops and simulators were key to reinforcing what I learned, and I feel prepared to face the challenges of the industry.
This diploma program exceeded my expectations. I gained a solid theoretical and practical understanding of fuel and oil systems, from troubleshooting to repairing complex components. Thanks to the training I received, I was able to resolve a recurring fuel pressure problem in a diesel engine that no one in my workshop had been able to fix, which positioned me as a technical expert and increased my clients’ confidence in me.
“Thanks to the Diploma in Fuel and Oil System Repair, I was able to diagnose and resolve an intermittent power loss problem in a racing vehicle. I identified a tiny leak in the injection system that other mechanics had missed, allowing the team to win the race. This diploma provided me with the practical skills and knowledge necessary to excel in my field.”
Frequently asked questions
Vehicle fuel and oil systems.
Yes. The itinerary includes ECDIS/Radar-ARPA/BRM with harbor, ocean, fog, storm, and SAR scenarios.
Online with live sessions; hybrid option for simulator/practical placements through agreements.
It depends on the specific diploma program, but it generally does cover both.
Recommended functional SMCP. We offer support materials for standard phraseology.
Yes, with a relevant degree or experience in maritime/port operations. The admissions interview will confirm suitability.
Optional (3ā6 months) through Companies & Collaborations and the Alumni Network.
Simulator practice (rubrics), defeat plans, SOPs, checklists, micro-tests and applied TFM.
A degree from Navalis Magna University + operational portfolio (tracks, SOPs, reports and KPIs) useful for audits and employment.
- Introduction to Fuel Systems: Components, Types, and General Operation
- Combustion Fundamentals: Theory, Air-Fuel Ratio, Efficiency
- Fuel Injection Systems: Types, Characteristics, and Diagnosis (Gasoline and Diesel)
- Fuel Pumps: Types, Operation, Testing, and Replacement
- Fuel Filters: Types, Maintenance, and Impact on Performance
- Injectors: Types, Diagnosis, Cleaning, and Calibration
- Fuel System Sensors: MAF, MAP, O2, TPS – Functions and Diagnosis
- Lubrication Systems: Types, Components, and Operation
- Lubricating Oils: Types, Specifications, Selection, and Maintenance
- Diagnosing Problems in Lubrication Systems: Pressure, Consumption, Contamination
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Request information
Complete the Application Form.
Attach your CV/degree certificate (if you have it to hand).
Indicate your preferred cohort (January/May/September) and whether you would like the hybrid option with simulator sessions.
An academic advisor will contact you within 24ā48 hours to guide you through the admission process, scholarships, and compatibility with your professional schedule.
Faculty
Eng. TomƔs Riera
Full Professor
Eng. TomƔs Riera
Full Professor
Eng. SofĆa Marquina
Full Professor
Eng. SofĆa Marquina
Full Professor
Eng. Javier BaƱuls
Full Professor
Eng. Javier BaƱuls
Full Professor
Dr. Nuria Llobregat
Full Professor
Dr. Nuria Llobregat
Full Professor
Dr. Pau Ferrer
Full Professor
Dr. Pau Ferrer
Full Professor
Cap. Javier Abaroa (MCA)
Full Professor
Cap. Javier Abaroa (MCA)
Full Professor