8/3/2019 1623 Basic Engine Concepts

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Basic Engine Concepts WVEIS Code 1623

This course will introduce students to basic engine concepts, skills, technology and service of the automobile.

Standard 1: Perform general engine diagnosis, removal and reinstallations (R&R).

(1623.S.1)

General Engine Diagnosis, Removal and Reinstallations (R&R) Objectives

Students will:1623.1.1 Interpret and verify complaint; listen to engine noises; inspect engine assembly for fuel, oil,

coolant, and other leaks; determine needed repairs.1623.1.2 Diagnose the cause of excessive oil consumption, unusual engine exhaust color, odor, and

sound; determine needed repairs.1623.1.3 Perform engine vacuum tests; determine needed repairs.1623.1.4 Perform cylinder power balance tests; cylinder compression tests; cylinder leakage tests;

determine needed repairs.1623.1.5 Remove engine (front-wheel drive); prepare for disassembly; reinstall engine.

Standard 2: Demonstrate cylinder head and valve train diagnosis and repair. (1623..S.2)

Cylinder Head and Valve Train Diagnosis and Repair Objectives

Students will:1623.2.1 Remove cylinder head(s); inspect cylinder head(s) for cracks; check gasket surface areas for 

warpage and leakage; check passage condition.1623.2.2 Install cylinder heads and gaskets; tighten according to manufacturer’s specifications and

procedures.1623.2.3 Inspect and test valve springs for squareness, pressure, and free height comparison; inspect

valve spring retainers, locks, and valve grooves; replace as needed. Replace valve stemseals.

1623.2.4 Inspect valve guides for wear; check valve guide height and stem-to-guide clearance; inspectvalves; inspect valve seats; recondition or replace as needed.

1623.2.5 Check valve face-to-seat contact and valve seat concentricity (run out), service seats andvalves as needed.

1623.2.6 Check valve spring assembled height and valve stem height; service valve and springassemblies as needed.

1623.2.7 Inspect pushrods, rocker arms, rocker arm pivots and shaft for wear, bending, cracks,looseness, and blocked oil passages (orifices); repair or replace.

1623.2.8 Inspect hydraulic or mechanical lifters; replace as needed. Adjust valves (mechanical or hydraulic lifters).

1623.2.9 Inspect and replace camshaft drives (including gear wear and backlash, sprocket and chainwear, overhead cam drive sprockets, drive belts, belt tension, and tensioners).

1623.2.10 Inspect camshaft for run out, measure journals and lobes for wear.1623.2.11 Inspect and measure camshaft bearings for wear, damage, out-of-round, and alignment;

determine needed repairs.

1623.2.12 Verify camshaft(s) timing according to manufacturer’s specifications and procedure.

Standard 3: Perform engine block diagnosis and repair. (1623.S.3)

Engine Block Diagnosis and Repair Objectives

Students will:1623.3.1 Inspect and replace pans, covers, gaskets, and seals.1623.3.2 Inspect engine block for cracks, passage condition, core and gallery plug condition, and

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