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PA Emissions Study Guide
PA Emissions Study Guide
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1
Carbon Dioxide (CO2) Exhaust gas that mirrors CO levels. When CO2 goes up, CO always goes down.
True
False
2
Located in the exhaust stream, it uses the heat from combustion, unburned fuel.
Diesel Particulate Filter (DPF)
Catalytic Converter
Emissions control module
Selective Catalytic Reduction (SCR) system
3
Exhaust pollutant that is unburned fuel from incomplete combustion or a misfire.
Hydrocarbon (HC)
none of the above
carbon dioxide
Carbon monoxide
4
A vehicle qualifies for a waiver if it fails the emissions test and the owner spends over $150 on repairs. If it fails 2
Exemption
Waiver
Relinquishment
the rest of the Question and it still fails a second emissions test.
5
The oxygen sensor in the exhaust detects the rich or lean condition of combustion.
True
False
6
Excessive temperatures of over 1500°F, caused by overly rich exhaust, will cause the catalytic material to sinter
Exhaust
Diagnostic Code
Catalytic Converter Damage
EGR Valve
7
Air Injection Reaction (AIR) 2RA
It enhance burning process as combustion gases leave the engine.
Not a real thing.
Emissions control system designed to inject fresh air into exhaust system.
It enhances the control system to he exhaust.
8
If the void sticker is damaged, the inspector must void it and retain it.
True
False
9
Warning to indicate a severe misfire that can cause Catalytic Converter damage.
Flashing DTC Indicator
Flashing MIL Light
Flashing Fault Indicator
Flashing CEL (Check Engine Light
10
Emissions control that uses a charcoal canister to collect and store vapors that originate in the fuel system
Malfunction Indicator Lamp (MIL)
Non-Pump (Pulse Air) System
Evaporative Control System (EVAP)
Exhaust Gas Recirculation (EGR)
11
Valve location on top of the engine to regulate the flow of blow-by gases being removed from the crankcase
Powertrain Control Module (PCM)
Positive Crankcase Ventilation (PCV)
Pressure relief valve
Idle Air Control Valve
12
NOx is a toxic exhaust pollutant formed when combustion temperatures exceed 2,500°F.
True
False
13
A customer can challenge the emissions inspection results by contacting PennDOT within ten days of the inspection date.
Referee Process
Subject Vehicle
Waiver
Referee
14
Fuel Trim is a Setting controlled by PCM that reflects adjustment fuel delivery optimize engine combustion conditions.
True
False
15
Toxic exhaust pollutant formed when there isn't enough oxygen to support combustion.
Carbon dioxide (CO₂)
Water vapor (H₂O)
Helium (He)
Carbon Monoxide (CO)
16
Vehicle Inspection Report is a printout of the emissions test result, signed by the inspector and given to the customer
False
True
17
Diagnostic Trouble Code (DTC)
Standardized code that identifies where and what on-board problem exists.
Standardized alpha-numeric code that identifies where and what on-board.
Standardized numeric code that identifies where and what on-board problem.
Standardized alpha code that identifies where and what on-board problem.
18
Fuel inlet restrictor setting controlled by the PCM to adjust fuel delivery for optimal combustion.
True
False
19
A valve used to control the flow of exhaust gas back into the intake and can be controlled by either vacuum.
PCV Valve
Blow-Off Valve
EGR Valve
Bypass Valve
20
Oxidation Converter Converter that uses the oxidation process to reduce HC and CO, converting them to CO2 and H2O.
False
True
21
Lean Mixture Fuel ration above 14.7:1 that represents an excess of oxygen and not enough gasoline.
True
False
22
Stoichiometric point
Ideal fuel mixture of 14.7 parts oxygen to 3 parts fuel. measured by weight
Ideal fuel mixture of 15.7 parts oxygen to 1 part fuel. measured by weight
Ideal fuel mixture of 14.5 parts oxygen to 2 parts fuel.measured by weight
Ideal fuel mixture of 14.7 parts oxygen to 1 part fuel. measured by weight
23
Fuel inlet restrictor under the gas cap prevents adding leaded fuel to unleaded vehicles.
True
False
24
Trip A vehicle driving mode that allows a component or system to be monitored.
True
False
25
Reduction converter reduces NOx emissions back to N2 and O2.
True
False
26
Vacuum relief valve 2RA
a valve that prevents air from entering the fuel tank. It would maintain
Valve located in the gas cap that open and fresh air to enter the fuel tank
sealed environment in the tank, would only allow pressure or air to escape
relieves the vacuum that might build up during cooling down periods.
27
Subject Vehicle
A gasoline-powered vehicle, 1975 and newer, a GVWR of 10,000 pounds or less
A gasoline-powered vehicle, 1975 and newer, a GVWR of 1,000 pounds or less
A gasoline-powered vehicle, 1965 and newer, GVWR of 9,000 pounds or less
A gasoline-powered vehicle, 1975 and newer, a GVWR of 9,000 pounds or less
28
Data Link Connector (DLC) A 15 pin connector that serves as the interface between the vehicle's on-board computer.
False
True
29
recirculates exhaust gases into the intake to lower combustion temperatures and reduce NOx emissions.
Malfunction Indicator Lamp (MIL)
Exhaust Gas Recirculation (EGR)
Evaporative Control System (EVAP)
Non-Pump (Pulse Air) System
30
"Light off" temperature is around 500
False
True
31
Malfunction Indicator Lamp (MIL)
Emission Fault Indicator flashes when pollution exceeds allowed limit 150
indicator light illuminates when emissions fault increases pollution by 150
Check Engine Light triggers when emissions exceed 150% of the limit.
Pollution Alert Light activates when emissions are 150% above the limit.
32
Is a Certified Emissions Person a certified to deliver emission waivers.
True
False
33
Catalytic converter that can reduce all three of the harmful pollutants (HC, CO and NOx).
Two Way Catalyst (TWC)
Three Way Catalyst (TWC)
none of the above
Four way Catayst (FWC)
34
Freeze frame a Snapshot of important operating parameters recorded at the time of fault as required by OBD II standards
False
True
35
Repair Data Form documents repairs made after a vehicle fails emissions inspection.
True
False
36
Tampered systems have parts changed, removed, or disconnected, affecting emissions control.
True
False
37
Misfire Failure of the air fuel charge in a cylinder to ignite.
False
True
38
Oxygen (O2) Exhaust gas that is a good lean indicator.
True
False
39
The Positive Crankcase Ventilation (PCV) valve is located in the fuel cap and relieves pressure in the fuel tank.
True
False
40
Monitor Onboard diagnostic test that is executed by the PCM.
False
True
41
Readiness Status Indicates whether or not a monitor has successfully run.
True
False
42
Scan Tool is a diagnostic computer that reads trouble codes, readiness status, and freeze frame data.
False
True
43
Rich Mixture Fuel ratio below 14.7:1 that represents an excess of gasoline and not enough oxygen.
True
False
44
Oxygen (O2) Exhaust pollutant that is highly toxic and increases when combustion chamber temperatures exceed 2,500 deg
False
True
45
Drive Cycle The driving conditions needed to execute all readiness monitors on a vehicle.
True
False
46
Rich Mixture is below 14:6
False
True
47
For a windshield replacement, the inspector can charge the program fee plus up to $2.00 for a new emissions sticker.
Waiver
Windshield Replacement
Sticker Security
Void sticker
48
AIR system uses exhaust pulses to draw fresh air into the exhaust without a pump.
Non-Pump (Pulse Air) System
Air Injection Pulse System
Pulse Air Injection System
Non-Driven Air Injection System
49
Sticker Security All emissions stickers must be secured under lock and key at all times.
False
True
50
Person certified to perform emissions inspections in the Northern Region only.
Northern Region Inspector
Emissions Inspector
none of the above
Northern Region Emissions Inspector
51
Free Retest failing vehicle is eligible for one free retest at the original station returns 30 days of the initial test.
True
False
52
Gasoline Fuel consisting of hydrogen and carbon atoms combined into hydrocarbon compounds.
False
True
53
Certified Emissions Repair Technician is a Person certified to deliver emission waivers.
False
True
54
what is an emissions inspector
A person who completed a 10 hour certification and test
A person who completed a 15 hour certifcation
A person who completed an Emissions test
A person who completed a 16 hour certification and test
