Identify and interpret engine performance concerns; determine necessary action

Lesson Plan for

AUT 188-189/AUT 293

Automotive Service Technology Section D/Automotive Special Problems

Course HS Title: / Automobile Service Technology/Special Problems / Program:
KCTCS Courses included in HS Title: (Lesson is prepared for course highlighted.)
KCTCS Course No. / KCTCS Course Title
Introduction/Context / This lesson will instruct the student on how to identify and interpret engine performance concerns, and determine necessary action. Knowledge of these techniques and the skills required to correct problems associated with this task are necessary for a student to acquire if they wish to compete for high paying, high skilled jobs in an Automotive Repair Facility. Entry level technicians need to be able to perform this task to 100% accuracy. Incorrectly performing this task can lead to an automobile accident or create customer satisfaction issues.
Prepared By / School / Date:
Grade Level / No. Students / No.IEP's: / Lesson Length:
Task
Identify and interpret engine performance concerns; determine necessary action
No. / Objective
1 / Given the proper tools and instruction, the student will be able to identify and interpret engine performance concerns, determine necessary action, and pass a written test covering the task with 100% accuracy.

Connections:

Skills Standards:
OH 001
OH 002
OH 003
OD 002
OD 003
OD 005
Common Core Technical Standards:
TD-SYS-2
New Common Core Standards:
RST 11-12.2
RST 11-12 3
A-CED-4
N-Q-1

INSTRUCTIONAL MATERIALS/TECHNOLOGY

Teacher Designed Materials and Other Handouts

Textbooks and Workbooks

Author / Title/ISBN No. / Edition / Publisher / Pages
Tim Giles / Automotive Service: Inspection, Maintenance and Repair / Third / Thomson/Delmar / 782
James Duffy / Modern Automotive Technology / Seventh / Goodheart Wilcox / 859-870


Web Addresses

Title / Publisher / URL
Today's Class / Melior / www.todaysclass.com


Content/Presentation/Demonstration Outline

Instruct students that an engine performance problem is any trouble that affects the power, fuel economy, emission output levels, and dependability of the vehicle. Any problem that affects the performance of the vehicle is often referred to as a DRIVEABILITY problem. Inform students that a Driveability problem can be caused by the computer system, ignition system, fuel system, emission control systems, or the engine itself. Engine performance problems reduce engine power, lower fuel economy, engine smoothness, and increase emissions.
Let students know that for an engine to start and run properly, 3 things are necessary. They are good compression, correct spark timing and a correct fuel and air mixture.
Teach students that to troubleshoot driveability problems properly, they need to train themselves to always ask the following questions: • What are the symptoms (noise, miss, smoke, etc.). • When do the symptoms occur (at idle, when accelerating, when engine is cold or hot, etc.)? • What system could be producing the symptoms (ignition, fuel, engine, etc.). • Where is the most logical place to start testing? • Which part is most likely to cause the symptoms?
Remind students that in every case, they must look for the actual cause of the problem, also referred to as the root cause of failure. Instruct students to use Troubleshooting Charts to aid them in their diagnosis, and to always check for any Technical Service Bulletins (TSB’s) that may contain information on fixing the problem.
Here are some possible symptoms and causes that could create Engine and Drivability problems to relay to students:
ENGINE WILL NOT START. 1. Weak battery. 2. Corroded or loose battery connections. 3. Defective starter. 4. Moisture on ignition wires. 5. Faulty ignition cables. 6. Faulty coil or ignition control module. 7. Incorrect spark plug gap. 8. Dirt or water in fuel system. 9. Faulty fuel pump.
ENGINE STALLS OR ROUGH IDLE. 1. Low idle speed. 2. Idle mixture too lean or too rich. 3. Vacuum leak. 4. Incorrect ignition wiring. 5. Faulty coil.
LOSS OF POWER. 1. Dirty or incorrectly gapped spark plugs. 2. Dirt or water in fuel system. 3. Faulty fuel pump. 4. Incorrect valve timing. 5. Blown cylinder head gasket. 6. Low compression. 7. Burned, warped or pitted valves. 8. Restricted exhaust system. 9. Faulty ignition cables. 10. Faulty coil.
ENGINE MISSES ON ACCELERATION. 1. Dirty spark plug or improper gap. 2. Dirt in fuel system. 3. Burned, warped or pitted valves. 4. Faulty coil.
ENGINE MISSES AT HIGH SPEED. 1. Dirty spark plug or improper gap. 2. Faulty coil. 3. Dirty fuel injectors. 4. Dirt or water in fuel system.
Instruct students that many of the causes of the problems mentioned above can be diagnosed with a Scan Tool on today’s vehicles, but students should always do a visual check to eliminate any obvious problems that might be right in front of them. Instructor will cover Scan Tool operation in another lesson.


Applications/Practice

1 / Refer to content


Evaluation and feedback Prior to Testing or Lab Work

1 / Objective 1. / Formative assessment / Instructor will observe students as they practice the procedure to assure correct procedure and safety practices are being followed. A checklist will be utilized to chart student progress on the task. Questioning techniques will be utilized as necessary to demonstrate student comprehension / Adaptations and/or accommodations for special needs students will be added if required.


STUDENT ASSESSMENT:(Assess student progress with performance criteria.)

1 / Objective 1 / Summative assessment / written test questions on stated objective / adaptation and / or accommodations for special needs students will be added if required
IMPACT--Reflection/Analysis of Teaching and Learning: (How did students’ progress in relation to the state objectives? Was the instruction successful? Analyze samples of student work particularly that which is unsatisfactory, for the purpose of planning further instruction.)
REFINEMENT--Lesson Extension and Follow-up: (To be filled in as the lesson is modified during initial planning and/or during the teaching learning process.)