Lesson 1Visual inspection checklist: intake, vacuum lines, ignition, fuel system, sensorsGives yuh a step-by-step visual check routine before fancy testin. Yuh guh check intake parts, vacuum lines, ignition bits, fuel system, an visible sensors fi ketch obvious faults quick-quick.
Inspecting intake ducts and air filter boxChecking vacuum hoses and PCV routingReviewing coils, wires, and spark plugsLooking for fuel leaks and line damageSensor connector and harness inspectionLesson 2Repair planning: parts to consider (fuel filter/pump, injectors, ignition coils/plugs, MAF, intake gaskets), special tools, torque specs lookup strategyGuides yuh fi plan repairs when faults show up. Yuh guh list likely parts, check if dem fit, plan tool needs, an look up torque specs an procedures fi avoid comebacks an waste time.
Listing probable parts by systemChecking part numbers and compatibilityIdentifying needed special toolsFinding torque specs and sequencesPlanning workflow to reduce reworkLesson 3Interpreting diagnostic results: mapping symptom -> data pattern for common causes (vacuum leak, faulty O2/MAF, weak fuel pump, ignition fault, coolant/temp sensor)Teaches how fi link symptoms wid data patterns fi spot likely causes. Yuh guh map fuel trims, O2, MAF, an misfire data to tings like vacuum leaks, weak pumps, ignition faults, an coolant sensor errors.
Recognizing vacuum leak data signaturesPatterns of weak fuel pump or restrictionIdentifying faulty O2 or MAF behaviorIgnition fault clues in misfire countersCoolant sensor errors and warm-up dataLesson 4Post-repair validation: warm-up behavior, fuel trim normalization, CEL verification, test drive acceptance criteriaTeaches how fi confirm repairs by watchin warm-up, fuel trims, an check engine light. Yuh guh set test drive routes, acceptance rules, an document steps fi make sure di complaint fully sorted.
Verifying cold and hot restart performanceMonitoring short and long term fuel trimsConfirming CEL status and code clearingDesigning a representative road test routeDefining pass or fail criteria and notesLesson 5Sensor and control component testing: MAF cleaning/check, intake vacuum/leak detection, EVAP leak test, cam/crank correlation checkCovers testin key sensors an control parts dat affect startin, idle, an fuel use. Yuh guh learn MAF check an clean, vacuum leak findin, EVAP leak tests, an cam-crank match verify.
MAF visual check, cleaning, and output reviewSmoke and propane tests for vacuum leaksEVAP leak test basics and common faultsCam and crank signal correlation checksInterpreting scan data from key sensorsLesson 6Basic bench and in-vehicle tests: fuel pressure, fuel rail leakdown, injector balance, compression test, cylinder misfire isolationCovers main bench an in-car tests fi separate fuel, air, an mechanical faults. Yuh guh measure fuel pressure, check leakdown, balance injectors, run compression tests, an isolate misfirin cylinders safe.
Static and running fuel pressure measurementFuel rail leakdown and regulator evaluationInjector balance and flow comparison methodsCompression and relative compression testingCylinder disable tests for misfire isolationLesson 7Customer communication script: plain-language explanation of findings, recommended repairs, risks of delay, maintenance adviceShows how fi explain findins an repair plans in simple talk. Yuh guh practice scripts coverin what found, recommended work, risks if delay, costs, an easy maintenance tips fi build trust.
Explaining fault codes in simple termsDescribing test results without jargonPresenting repair options and prioritiesDiscussing risks of delaying repairsGiving preventive maintenance guidanceLesson 8Cold-start and warm-up road test procedure and expected observationsOutlines controlled cold-start an warm-up road test. Yuh guh learn steps, safety checks, an expected RPM, idle quality, temp rise, an fuel trims from start to full warm.
Pre-start checks and ambient conditionsObserving initial crank and first idleMonitoring warm-up RPM and idle changesWatching coolant temp and closed loop entryRecording fuel trim trends during warm-upLesson 9Targeted customer intake questions for engine starting and idle issuesFocuses on structured questions fi reveal patterns in startin an idle complaints. Yuh guh learn how fi ask bout conditions, fuel use, lights, prior fixes, an drivin habits fi guide fast diagnostics.
Clarifying cold versus hot start conditionsQuestions on idle quality and stall eventsHistory of recent repairs and fuel qualityDriving patterns, trip length, and load useDocumenting warning lights and noisesLesson 10OBD-II scan strategy: reading freeze frame, pending/confirmed codes, live data PIDs to monitor (RPM, long/short fuel trims, O2, MAF, MAP, IAT, engine coolant temp)Explains step-by-step OBD-II scan plan. Yuh guh read freeze frame, pending an confirmed codes, an pick key PIDs like RPM, fuel trims, O2, MAF, MAP, IAT, an coolant temp fi guide diagnosis.
Capturing and reading freeze frame dataSorting pending versus confirmed codesSelecting essential live data PIDsUsing fuel trims to narrow fault areasSaving and printing reports for recordsLesson 11Pre-drive and lift safety checks: battery, fuel leak, EVAP, cooling, mountsDetails pre-drive an lift checks fi protect yuh, di vehicle, an others. Yuh guh check battery, fuel an EVAP leaks, coolin system, an engine mounts before road test or lift.
Battery state, terminals, and cable securityFuel, EVAP, and exhaust leak inspectionCooling system level, leaks, and fan checkEngine and transmission mount conditionVerifying tire, brake, and steering basicsLesson 12Electrical and ignition tests: primary/secondary ignition checks, coil-on-plug testing, spark analysis with scope or substitute methodsFocuses on electrical an ignition testin fi hard start an rough idle. Yuh guh do primary an secondary checks, test coil-on-plug, an analyze spark wid scopes or other tools.
Primary ignition voltage and control checksSecondary ignition pattern interpretationCoil-on-plug resistance and output testsUsing scopes for spark and trigger signalsSubstitute tools when scopes are unavailableLesson 13Estimating labor and parts costs: time study approach, labor guides and parts sourcing checklistExplains how fi estimate labor an parts fi drivability fixes usin time studies, guides, an checklists. Yuh guh account fi diagnostics, rechecks, an real parts price fi accurate quotes.
Breaking jobs into estimate line itemsUsing labor guides and flat rate dataBuilding a parts and consumables checklistComparing OEM and aftermarket optionsIncluding diagnostic and recheck time
