Dr. Marina AlcoverAcademic director focused on measurable results and operational excellence in maritime education. Integrates IMO/STCW regulations and ISO 21001/9001 f
Diploma · 800 h · 8 modules
Diploma in Fuel and Oil System Repair
The Diploma in Fuel and Oil Systems RepairThis 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 machine
Duration800 h
FormatOnline
Starts7 December
Places20 / 20
Prior knowledge
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Programme overview
What is the Diploma in Fuel and Oil System Repair?
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.
Programme type
Diploma
Study mode
Online
Duration
800 hours
Modules
8
Start date
26-11-2026
Programme highlights
- 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.
- Expand your career opportunities and become an expert in internal combustion engine maintenance.
Curriculum
Programme Structure
The programme is structured in 8 modules, listed below in order of study.
01
Fundamentals of Tribology, Fuels and Fluids
- Physical-chemical properties of diesel, gasoline and synthetic fuels
- Features, viscosity, additives and TBN index in lubricating oils
- Fluid contamination mechanisms: water, particles, soot and varnishes
- Fluid dynamics applied to injection, pumping and lubrication systems
- Environmental regulations on emissions (tier, euro, marpol) and impact of fuels
- Personal protective equipment (EPP) and hygiene in the management of hydrocarbons
- Interpretation of Pipe and Instrumentation (P&ID) Fluids
- Properties of fuels and lubricants
02
Diagnostic and repair of the fuel supply system
- Storage tanks, vents, supply and return lines
- Fuel transfer pumps: centrifuges, gears and paddles
- Maintenance and diagnosis of filtration systems, water separators and trap
- Diagnosis of restrictions, cavitation and air intake on the suction line
- Repair of fuel pressure regulators and relief valves
- Cleaning, degassing and sealing test in fuel tanks
- Purge protocols and removal of air bags in the circuit
- Water filters and separators
03
Intervention in diesel fuel injection systems
- Diagnosis of inline and rotary mechanical injection pumps
- Calibration, disassembly and reconditioning of mechanical injectors
- Repair of electronic injection systems Common Rail (CRDI)
- Testing and Replacing High Pressure Pumps, Rail and Sensors (FRP/VCV)
- Diagnosis of piezoelectric and inductive injectors in test bench
- Injector encoding (IMA/IQA codes) and adjustment on the control unit
- Detection of drip faults, poor spraying and over-injection
- Injection pump calibration
04
Repair of gasoline and carburation injection systems
- Diagnosis of multipoint injection (MPFI) and direct injection (GDI)
- Inspection, sealing and ultrasound cleaning of injectors
- Evaluation of submerged gasoline pumps, tank modules and level sensors
- Adjustment and reconditioning of carburettors and throttle bodies
- Fuel Vapor Circuit Diagnostic (EVAP) and Canister
- Injection Pulse Measurement, Oscilloscope Skipper and Rail Pressure
- Correction of rich/poor mixtures by readings from Lambda probe (O2 sensor)
- Electronic injection diagnosis
05
Diagnosis and repair of the lubrication system
- Forced lubrication circuit architecture and oil flow
- Inspection and repair of oil pumps of gears, lobes and paddles
- Repair and calibration of pressure regulating valves and bypass
- Maintenance of oil filters (total flow and bypass) and centrifuges
- Water-oil and air-oil heat exchangers: sealing test
- Detection of internal/external oil leaks and change of seals and gaskets
- Insulation of faults due to low oil pressure, overheating and dilution
- Oil pumps and pressures
06
Techniques for oil and tribodiagnosis
- Representative hot sampling and labouratory protocols
- Viscosity analysis, field viscometry and oil drop test
- Emission spectrometry for detection of wear metals (iron, copper, lead)
- Soot level measurement, fuel dilution and presence of glycol
- Particle contamination analysis and counting under ISO 4406
- Interpretation of lubrication reports for repair scheduling
- Flushing and decontamination of lubrication galleries
- Oil Analysis Interpretation
07
Instrumentation, sensors and electronic fluid control
- Pressure, temperature, density and fuel and oil level sensors
- Diagnostic of actuators, flow control solenoids and dispensers
- Fault code reading (DTC) and real-time parametres with scanner
- Fuel quality monitoring and water detection by sensors
- Diagnosis of cable harnesses, marinated/automotive connectors and ground
- Engine protection strategies for lack of lubrication or fuel pressure
- Analogue and digital instrumentation calibration of board
- Pressure and flow sensors
08
Cleaning protocols, quality testing and safety
- ISO Cleaning Standards for High Precision Component Repair
- Test bench handling (Benches test) for pumps and injectors
- Pressure, vacuum and flow under load testing procedures
- Safe management of hazardous waste (used oils, filters, solvents)
- Fire prevention, spill control and use of industrial absorbents
- Post-repair and component settling protocols
- Fuel pollution prevention
- Preparation of the technical report of repair, guarantees and recommendations
Workload
Study Time and Workload
800 hours of study, online and at your own pace. Move the slider to the hours a week you can really put in.
Hours a week8
Weeks to finish—
You finish around—
Who it is for
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
Faculty
Academic direction and faculty
The teaching team at Navalis: working professionals who deliver and oversee the institute's programmes.
Eng. Diego Cifuentes
Cap. Javier Abaroa (MCA)
Dr. Pau Ferrer
Dr. Nuria Llobregat
Eng. Javier Bañuls
Eng. Sofía Marquina
Eng. Tomás Riera
Verified reviews
Student Reviews
Reviews collected and verified by Opynio, not written by us.
Outcomes
Learning Outcomes
- 01Diagnosing and repairing faults in electronic injection systems
- 02Maintaining and optimizing the performance of lubrication systems
- 03Evaluate and troubleshoot problems in fuel pumps and filtration systems
- 04Understand and apply preventive maintenance techniques in fuel and oil systems
- 05Perform advanced diagnostic tests on fuel and oil systems
- 06Restore and calibrate high-precision fuel injectors
Careers
Career Opportunities
01Automotive/Diesel Repair Technician: Diagnosis and repair of fuel injection systems (gasoline/diesel) and lubrication systems.
02Fuel and Oil Systems Specialist at Dealerships: Specialized technical service, warranty, and preventive maintenance.
03Industrial Maintenance Mechanic: Repair and maintenance of fuel and oil systems in heavy machinery, generators, and industrial equipment.
04Service Technician in Transportation Companies: Maintenance and repair of vehicle fleets, fuel efficiency optimization.
05Technical Advisor in Spare Parts Sales: Specialized knowledge to recommend and sell spare parts and components for fuel and oil systems.
06Entrepreneur/Owner's Workshop: Creation and management of a workshop specializing in fuel and oil system repair.
07Technical Inspector in Vehicle Certification Companies: Verification of the correct functioning of fuel and oil systems to comply with environmental regulations.
08Technician 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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Questions
Entry Requirements
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 (3–6 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 Institute + operational portfolio (tracks, SOPs, reports and KPIs) useful for audits and employment.
Online admissions
Admissions Process
No waiting for a phone call. If your documents are complete, you can pay in the same session.
Entry requirements
Academic/Professional Profile:Vocational Training Certificate in Mechanics, Automotive Engineering, or similar; or demonstrable professional experience in vehicle repair.Technical Knowledge:Basic understanding of internal combustion engine systems and hydraulic systems.Documentation:Updated CV, copy of degree/certificates, ID/Passport, letter of interest (optional).Skills:Ability to work in a team, attention to detail, and problem-solving skills.```
Questions?
Frequently Asked Questions
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