2Engine Tune-UpA modern tune-up is performed as a part of routine maintenance instead of a drive-ability problem.People used to wait until the vehicle ran poorly to do a tune up When modern vehicles run poorly, it’s usually a sensor or computer related problem and seldom will a tune-up repair the it!
3Engine Tune-Up - Spark Plugs Some vehicle do not schedule a spark plug replacement until 100,000 miles!
4Engine Tune-Up - Minor Tune Service and replacement items in a minor tune up include:123456
5Engine Tune-Up - Major Tune Service and replacement items in a major tune up include:123456
6Engine Tune-Up - Diagnostic tools Diagnostic tools used during a major tune up include:123456
7Engine Tune-Up - Performance factors Performance factors affected by a tune up include:123456
8Engine Tune-Up - Rough Idle Both Techs are ASE Certified Master TechniciansTechnician at the right says a tune-up will not correct a rough idle in most cases.When modern vehicles run poorly, it’s usually a sensor or computer related problem and seldom will a tune-up repair the it!Technician at the left says the rough idle is most likely due to a defective or malfunctioning sensor, actuator, or ECM.
9Engine Tune-Up - Information It important to gather engine and vehicle performance information before performing the tune-up
10Engine Tune-Up - Temperature It important to bring the engine up to full operating temperature prior to diagnosing an operating condition
11Engine Tune-Up - Service Records It is important to maintain a vehicle’s service records
12Engine Tune-Up - Safety Rules OBD II automobiles require the battery be disconnected when performing vehicle service and maintenance.
13Engine Tune-Up - Safety Rules Four (4) safety rules to follow when performing a tune-up:1234
14Engine Tune-Up - Procedures Vehicle inspections performed during any tune-up:
15Engine Tune-Up - Procedures Steps in replacing spark plug wires:123
16Engine Tune-Up - Procedures When replacing spark plugs in an aluminum engine the engine should be warm
17Engine Tune-Up - Procedures Tools used to remove and replace spark plugs:
18Engine Tune-Up - Procedures Color observed on a spark plug removed from an efficiently operating engine
19Engine Tune-Up - Procedures Steps that must be performed before installing a spark plug in an engine
20Engine Tune-Up - Procedures Spark plugs must be installed first , ______ ______ before ???????????
21Engine Tune-Up - Procedures When installing spark plugs equipped with metal sealing washers the spark plug should be threaded in until it bottoms, then tightened an additional _____ turn.
22Engine Tune-Up - Procedures Spark plug wires that are not put on the correct cylinder’s spark plug cause the engine to misfire, run poorly, or not run at all (backfires when trying to start).
23Engine Tune-Up - Procedures The suggested replacement interval for one- and two-wire O2 sensors, For three wire sensors
24Engine Tune-Up - Procedures The recommended procedure for replacing an O2 sensor
25Engine Tune-Up - Procedures A compression test is performed during an engine’s life to check the engine’s mechanical condition without disassembly.
26Engine Tune-Up - Procedures Three (3) primary adjustments performed during a tune-up:
27Engine Tune-Up - Diesel Tune-Up Diesel engines require periodic maintenance similar to gasoline engines, but don’t have spark plugs to replace or an oxygen sensor to fail.
28Engine Tune-Up - Diesel Tune-Up The typical service tasks performed during diesel engine maintenance intervals include:
29Engine Tune-Up - Diesel Tune-Up Describe/Define a maintenance interval:
30Engine Tune-Up Questions? Refer to the Tune-up chapter (47) in your textbook.Make sure your name, date, and period are on your assignment before you turn it in .