ENGINE PERFORMANCE



Engine Performance WVEIS Code 1629

This course will introduce students to the skills, technology, and service of electrical/electronic systems of the automobile. Students will comply with personal and environmental safety practices associated with proper ventilation and the handling, storage, and disposal of chemicals in accordance with local, state, and federal safety and environmental regulations.

Standard 1: Perform general engine diagnosis. (1629.S.1)

General Engine Diagnosis Objectives

Students will:

1629.1.1 Interpret and verify complaint, inspect engine assembly for fuel, oil, coolant, and other leaks.

1629.1.2 Diagnose unusual engine noise or vibrations problems, unusual exhaust color, odor or sound.

1629.1.3 Perform engine absolute (vacuum/boost) manifold pressure tests; determine needed repairs.

1629.1.4 Perform cylinder power balance test, cylinder compression test and cylinder leakage test.

1629.1.5 Diagnose engine mechanical, electrical, electronic, fuel, and ignition problems with an oscilloscope and engine diagnostic equipment; determine needed action.

1629.1.6 Prepare a 4 or 5 gas analyzer; inspect and prepare vehicle for test and obtain exhaust readings; interpret readings and determine needed action.

Standard 2: Perform computerized engine controls diagnosis and repair. (1629.S.2)

Computerized Engine Controls Diagnosis and Repair Objectives

Students will:

1629.2.1 Diagnose emissions or driveability problems resulting from failure of computerized engine controls with no diagnostic trouble codes stored; determine needed repairs.

1629.2.2 Retrieve and record stored diagnostic trouble codes and diagnose the causes of emissions or driveability problems resulting from failure of computerized engine controls.

1629.2.3 Inspect, test, adjust, and replace computerized engine control system sensors, powertrain control module (PCM), actuators, and circuits.

1629.2.4 Obtain and interpret digital multimeter (DMM) readings.

1629.2.5 Access and use electronic service information (ESI).

1629.2.6 Locate and interpret vehicle and major component identifications numbers, (VIN, vehicle certification labels and calibration decals).

1629.2.7 Inspect and test power and ground circuits and connections and practice recommended precautions when handling static sensitive devices.

1629.2.8 Diagnose driveability and emissions problems resulting from failures of interrelated systems (cruise control, security alarms, torque controls, suspension controls, traction controls, torque management, A/C, automatic transmissions, and similar systems); determine needed repairs.

Standard 3: Perform diagnosis and repair of ignition system. (1629.S.3)

Ignition System Objectives

Students will:

1629.3.1 Diagnose no-starting, driveability, and emissions problems on vehicles with electronic ignition (distributor-less) systems and on vehicles with distributor ignition (DI) systems.

1629.3.2 Inspect and test ignition primary circuit wiring and components, distributor, ignition system secondary circuit wiring and components and ignition coil(s).

1629.3.3 Check and adjust (where applicable) ignition system timing and timing advance/retard.

1629.3.4 Inspect and test ignition wiring harness and connectors, ignition system pick-up sensor or triggering devices and ignition control module.

Standard 4: Perform fuel, air induction, and exhaust systems diagnosis and repair. (1629.S.4)

Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair Objectives

Students will:

1629.4.1 Diagnose hot or cold no-starting, hard starting, poor driveability, incorrect idle speed, poor idle, flooding, hesitation, surging, engine misfire, power loss, stalling, poor mileage, dieseling, and emissions problems on vehicles with carburetor-type fuel systems and injection-type fuel systems.

1629.4.2 Inspect fuel tank and fuel cap, replace fuel filter, fuel lines, fittings, and hoses. Check fuel for contaminants and quality.

1629.4.3 Inspect and test mechanical and electrical fuel pumps and pump control systems; replace as needed.

1629.4.4 Inspect and test fuel pressure regulations system and components of injection-type fuel systems and test cold enrichment system components.

1629.4.5 Remove, clean, and reinstall throttle body, adjust related linkages and inspect throttle body mounting plates, air induction and filtration system, intake manifold, and gaskets.

1629.4.6 Inspect and test fuel injectors; clean and replace.

1629.4.7 Check/adjust idle speed and fuel mixture where applicable.

1629.4.8 Remove, inspect, and test vacuum and electrical components and connections of fuel system; repair or replace as needed.

1629.4.9 Inspect exhaust manifold, exhaust pipes, mufflers, resonators, tail pipes, and heat shields; repair or replace as needed.

1629.4.10 Perform exhaust system back-pressure test; determine needed action.

1629.4.11 Test the operation of turbocharger/supercharger systems, remove, clean, inspect and repair or replace turbocharger/supercharger system components and identify the causes of turbocharger/supercharger failure.

Standard 5: Demonstrate emissions control systems diagnosis and repair. (1629.S.5)

Emissions Control Systems Diagnosis and Repair Objectives

Students will:

1629.5.1 Inspect and test positive crankcase ventilation (PCV) filter/breather cap, valve, tubes, orifices, hoses and diagnose oil leaks, emissions, and driveability problems resulting from failure of the positive crankcase ventilation (PCV) system.

1629.5.2 Diagnose emissions and driveabiliity problems cause by failure of the exhaust gas re-circulation (EGR) system, inspect and test valve, valve manifold, and exhaust passages, vacuum/pressure controls, filters, and hoses, electrical/electronic sensors, controls, and wiring.

1629.5.3 Inspect and test components of catalytic converter systems, diagnose emissions and driveability problems resulting from failure of the secondary air injection and catalytic converter systems, mechanical components of secondary air injection systems, electrical/electronically-operated components and circuits of the air injection systems.

1629.5.4 Inspect and test components of intake air temperature control system, and diagnose emissions and driveability problems resulting from failure of the intake air temperature control system.

1629.5.5 Inspect and test components of early fuel evaporation control system, and diagnose emissions and driveability problems resulting from failure of the early fuel evaporation control system.

1629.5.6 Adjust valves on engines with mechanical or hydraulic lifters.

1629.5.7 Verify correct camshaft timing; determine needed action.

1629.5.8 Verify engine operating temperature; determine needed action.

1629.5.9 Perform cooling system pressure tests; check coolant condition; inspect and test radiator, pressure cap, coolant recovery tank, and hoses; service or replace as needed.

1629.5.10 Inspect and test thermostat, by-pass, and housing; replace as needed.

1629.5.11 Inspect and test mechanical/electrical fans, fan clutch, fan shroud/ducting, air dams, and fan control devices; service or replace as needed.

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