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Chapter 17 Maintaining Your Vehicle. Owner's Manual. Provides valuable information about your vehicle and it's systems. Fuel System. Fuel Injection System Deliver exact amount of fuel to engine Reduce the amount of pollution-causing gases. Fuel Efficiency. Depends upon: Weight of car
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Owner's Manual • Provides valuable information about your vehicle and it's systems
Fuel System • Fuel Injection System • Deliver exact amount of fuel to engine • Reduce the amount of pollution-causing gases
Fuel Efficiency Depends upon: • Weight of car • Speed you drive - over 55 fuel efficiency decreased • Air resistance: keep windows closed when driving over 45 mph
Fuel Efficiency Continued • Also depends upon: • Type of engine - 4 or 6 cylinder • Vehicle Design • Manual vs Automatic • Power equipment - air conditioning
Know how to calculate your MPG • Used 10 gallons of fuel to drive 150 miles : 150 divided by 10 = 15MPG • You have 10 gallons of fuel. Your car delivers approximately 15 MPG in the city. How many miles should you be able to drive? = 150 miles
Emission System • Catalytic Converter • Converts harmful gases into less harmful gases & water • Muffler - reduces noise. Louder sounds may indicate a hole in. Our muffler • Check emission system - CO ( may poison you), CO2, hydrocarbons, nitrogen oxides
Drive Train SystemOften covered in warranty • Engine • Transmission (low fluid level may produce jerky shifting) • Clutch • Drive shaft • Differential (allows 1 wheel to turn more slowly than another) • Transaxle • Drive axles • Universal joints
Ignition & Electrical System • Alternator- recharges the battery • Battery - strong acid (dangerous)- powers vehicle's starter, lights, computer assisted controls, electrical accessories. A dead battery (no sound when starting the engine)can be jump started with jumper cables - know the procedure for "jumping" a vehicle's battery
Lights - headlights, taillights, back up lights, turn signals. Should be replaced immediately when defective
Lubricating & Cooling Systems • Oil helps engine work efficiently by reducing friction and cleaning engine parts - warning light comes on - pull off road and shut engine
Cooling System • Cools engine - mixture of antifreeze & water • Provides heat to interior of car • Radiator - connected to the engine - holds the coolant • Thermostat - controls the amount of coolant needed
Maintaining Control Systems • Power Steering - makes steering easier • Master Cylinder (Brake System) - forces fluid to each wheel's brake cylinder and squeezes brake pads against the turning disk which causes the friction to slow the wheel • Parking Brake is a completely separate system - it should hold your vehicle on a hill
Suspension System • Keeps tires in line according to steering • Shock absorbing
Preventative Maintenance(Care given to prevent trouble later) • Includes: • Day-to-day care • Mileage-based-maintenance: Periodic servicing done after a certain number of miles - shown in manual • Warranty may be voided if maintenance schedules are not followed
Tires • Belted tires - improved strength, performance and mileage • Radial tires - gives best fuel mileage - strengthens tire, improved tread mileage, & traction • Air pressure in increases when warm, lowers when cool
Tires need to be rotated regularly, balanced (for even wear) and aligned (for longer life & more even wear of tire)
Replace tires when the wear bar appears smooth • Always use the same tires for all 4 tires • If you want your tires to last longer then you need a higher tread-wear rating