Diesel Course

Lesson 1 • Diesel Combustion Principles

Covers compression-ignition theory, air-fuel ratios, and heat release. Establishes the thermodynamic foundation for all subsequent engine topics.

Lesson 2 • Engine Cycles and Configurations

Explains four-stroke and two-stroke diesel cycles and common cylinder arrangements. Connects cycle theory to real engine layouts students will service.

Lesson 3 • Major Engine Components Overview

Identifies the block, head, crankshaft, camshaft, and valvetrain. Provides component recognition skills needed before disassembly procedures.

Lesson 1 • Fuel System Diagnostics

Applies pressure testing, flow measurement, and scan-tool data to isolate fuel faults. Connects system knowledge to structured diagnostic workflows.

Lesson 2 • Mechanical Injection Systems

Explains inline pump, distributor pump, and unit injector operation. Provides mechanical baseline before introducing electronic controls.

Lesson 3 • Fuel Properties and Handling

Covers cetane rating, viscosity, cloud point, and contamination risks. Proper fuel knowledge prevents injector damage and poor combustion.

Lesson 4 • Common-Rail and Electronic Injection

Details high-pressure common-rail architecture, solenoid and piezo injectors, and ECM control strategies. Builds on mechanical knowledge to address modern systems.

Lesson 1 • Air Filtration and Intake Ducting

Covers filter types, restriction indicators, and duct integrity. Clean, unrestricted airflow is the first requirement for proper combustion.

Lesson 2 • Turbocharger Principles and Types

Explains exhaust-driven turbine and compressor operation, fixed and variable geometry designs. Turbocharging directly affects power density and fuel efficiency.

Lesson 3 • Charge Air Cooling

Describes air-to-air and air-to-liquid intercooler designs and their effect on charge density. Cooler intake charge increases power and reduces thermal stress.

Lesson 4 • Exhaust Manifold and Back Pressure

Examines manifold design, gasket integrity, and back-pressure limits. Excessive back pressure reduces scavenging and turbocharger efficiency.

Lesson 1 • Lubrication System Diagnostics

Uses pressure gauges, oil analysis, and visual inspection to identify wear and leaks. Systematic diagnosis prevents unplanned engine downtime.

Lesson 2 • Cooling System Diagnostics and Service

Applies pressure testing, flow measurement, and combustion gas detection to isolate faults. Connects cooling theory to hands-on service procedures.

Lesson 3 • Engine Oil Properties and Selection

Covers viscosity grades, API/ACEA classifications, and additive packages for diesel engines. Correct oil selection is the foundation of effective lubrication.

Lesson 4 • Lubrication System Components

Traces oil flow from sump through pump, filter, and galleries to bearings and valve train. Component knowledge enables accurate fault isolation.

Lesson 1 • Engine Assembly and Break-In

Applies torque sequences, sealant procedures, and timing alignment for final assembly. Correct break-in procedures seat rings and establish bearing films.

Lesson 2 • Crankshaft and Camshaft Service

Inspects journal diameter, runout, and surface finish on crankshaft and camshaft. Proper shaft condition is essential for bearing life and valve timing accuracy.

Lesson 3 • Engine Disassembly and Inspection

Covers safe removal sequences, component marking, and initial wear assessment. Organized disassembly prevents damage and ensures correct reassembly.

Lesson 4 • Cylinder Block and Head Measurement

Uses micrometers, bore gauges, and straightedges to measure wear and distortion. Accurate measurement determines whether components can be reused or must be replaced.

Lesson 1 • Electrical Fundamentals for Diesel Technicians

Reviews Ohm's law, series-parallel circuits, and multimeter use in a diesel context. Electrical competence underpins all electronic diagnostics in later sections.

Lesson 2 • Starting and Charging Systems

Tests starter motor draw, glow plug circuits, and alternator output specific to diesel demands. High compression starting requires robust electrical system performance.

Lesson 3 • Engine Control Module Functions

Explains ECM inputs, outputs, and control strategies for fuel, air, and emissions. ECM understanding is prerequisite for sensor and actuator diagnostics.

Lesson 4 • Sensor and Actuator Diagnostics

Tests CKP, MAP, rail pressure, and temperature sensors using live data and component tests. Accurate sensor diagnosis avoids unnecessary part replacement.

Lesson 1 • Diesel Particulate Filter Operation

Explains DPF soot loading, passive and active regeneration, and ash accumulation. Correct regeneration management prevents DPF failure and costly replacement.

Lesson 2 • Exhaust Gas Recirculation Systems

Explains cooled EGR valve operation, flow control, and its role in NOx reduction. EGR system faults directly affect emissions compliance and engine performance.

Lesson 3 • Diesel Emissions Fundamentals

Identifies NOx, particulate matter, HC, and CO formation mechanisms in diesel combustion. Understanding pollutant sources guides correct aftertreatment system selection.

Lesson 4 • Diesel Oxidation Catalyst Service

Covers DOC substrate function, light-off temperature, and HC/CO conversion efficiency. DOC condition affects DPF regeneration and overall aftertreatment performance.

Lesson 1 • Structured Diagnostic Process

Establishes a repeatable six-step diagnostic method from complaint verification to repair validation. A structured process reduces misdiagnosis and repeat repairs.

Lesson 2 • Oscilloscope Diagnostics for Diesel Systems

Captures injector waveforms, sensor signals, and CAN bus frames to identify electrical faults. Oscilloscope analysis reveals faults invisible to multimeters and scan tools.

Lesson 3 • Performance Tuning and Calibration

Adjusts ECM calibration parameters for fuel quantity, timing, and boost within design limits. Calibration skills support fleet optimization and post-repair verification.

Lesson 4 • Advanced Scan Tool Techniques

Uses bidirectional controls, graphing, and data logging to isolate intermittent faults. Advanced scan tool use accelerates diagnosis of complex electronic issues.