PA Emissions Inspector Certification
Questions and All Correct Answers.
Station Hotline - Answer (888) 265-5909
Customer Hotline - Answer (800) 265-0921
Sticker Department - Answer (717) 705-2182
An emissions inspector must meet what requirements? - Answer Be at least 18 years of age
Have a valid driver's license
To deliver emissions waivers you must become a(n)... - Answer emissions Certified Repair
Technician (CRT)
To become a CRT you must... - Answer Have a valid driver's license
What is the Northern-Emission Inspectors Certification program? - Answer Limited to
performing the visual antitampering check and gas-cap test.
Upon successful completion of the N-EIC program you will receive.. - Answer An emissions
inspection ID card from PennDOT that allows you to perform inspections on vehicles registered
in the Northern Region counties only.
Air pollution - Answer Contamination of the atmosphere by gaseous, liquids or solid wastes
or byproducts. Emitted from natural or human-made sources.
Most of the world's air pollution problems are... - Answer Human-made
Major Pollutants - Answer Hydrocarbons (HCs), carbon monoxide (CO), and nitrogen oxides
(NOx). (released from fossil fuels like gasoline and diesel)
Hydrocarbons - Answer Unburned fuel of any class of organic compounds composed of
carbon and hydrogen
Carbon Monoxide - Answer Colorless, odorless, and poisonous gas. Created when an engine
burns HV in the presence of O2.
, Oxygen - Answer Too much or too little can cause improper combustion and result in
pollution
Ozone (Smog) - Answer Not emitted directly into the air, it is created at ground level by a
chemical reaction between NOx and HC in the presence of sunlight .
Nitrogen Oxides (NOx) - Answer Excessive amounts can be caused by a lean air-fuel mixture,
a defective exhaust gas recirculation valve, higher than normal engine temperatures, vacuum
leaks, and advanced ignition timing.
Five Gas Theory - Answer The relationship between HC, CO, O2, CO2, and NOx are the same
in all gasoline engines.
Stoichiometric Ratio - Answer For all engines, a mixture of approx. 14.7 parts of air to every
one-part of fuel produces the most efficient use of fuel and the lowest emissions.
Why would hydrocarbon be higher than the stoichiometric ratio? - Answer The mixture is
very rich or very lean. Normal combustion is 15:1 air/fuel ratio.
What happens when there is not enough O2 in an engine? - Answer It runs rich, meaning
combustion forms more CO and less CO2.
What does it mean if Hc is high and CO is extremely low? - Answer The engine is either very
lean or there's a misfire.
What does it mean if CO is very high? - Answer The engine is definitely rich, getting too
much fuel or not enough air.
Why is oxygen the best lean indicator? - Answer The levels change during lean mixtures.
Why is oxygen (O2) not a reliable rich indicator? - Answer It is low whenever the mixture is
rich. Rich mixtures burn all available O2.
When did PA implement itd first emissions I/M program? - Answer 1984
In 1990 Congress set the requirements for an enhanced program in the Clean Air Act
Amendments which aimed to do what? - Answer Lower harmful emissions and increase
accountability at the state level.
Questions and All Correct Answers.
Station Hotline - Answer (888) 265-5909
Customer Hotline - Answer (800) 265-0921
Sticker Department - Answer (717) 705-2182
An emissions inspector must meet what requirements? - Answer Be at least 18 years of age
Have a valid driver's license
To deliver emissions waivers you must become a(n)... - Answer emissions Certified Repair
Technician (CRT)
To become a CRT you must... - Answer Have a valid driver's license
What is the Northern-Emission Inspectors Certification program? - Answer Limited to
performing the visual antitampering check and gas-cap test.
Upon successful completion of the N-EIC program you will receive.. - Answer An emissions
inspection ID card from PennDOT that allows you to perform inspections on vehicles registered
in the Northern Region counties only.
Air pollution - Answer Contamination of the atmosphere by gaseous, liquids or solid wastes
or byproducts. Emitted from natural or human-made sources.
Most of the world's air pollution problems are... - Answer Human-made
Major Pollutants - Answer Hydrocarbons (HCs), carbon monoxide (CO), and nitrogen oxides
(NOx). (released from fossil fuels like gasoline and diesel)
Hydrocarbons - Answer Unburned fuel of any class of organic compounds composed of
carbon and hydrogen
Carbon Monoxide - Answer Colorless, odorless, and poisonous gas. Created when an engine
burns HV in the presence of O2.
, Oxygen - Answer Too much or too little can cause improper combustion and result in
pollution
Ozone (Smog) - Answer Not emitted directly into the air, it is created at ground level by a
chemical reaction between NOx and HC in the presence of sunlight .
Nitrogen Oxides (NOx) - Answer Excessive amounts can be caused by a lean air-fuel mixture,
a defective exhaust gas recirculation valve, higher than normal engine temperatures, vacuum
leaks, and advanced ignition timing.
Five Gas Theory - Answer The relationship between HC, CO, O2, CO2, and NOx are the same
in all gasoline engines.
Stoichiometric Ratio - Answer For all engines, a mixture of approx. 14.7 parts of air to every
one-part of fuel produces the most efficient use of fuel and the lowest emissions.
Why would hydrocarbon be higher than the stoichiometric ratio? - Answer The mixture is
very rich or very lean. Normal combustion is 15:1 air/fuel ratio.
What happens when there is not enough O2 in an engine? - Answer It runs rich, meaning
combustion forms more CO and less CO2.
What does it mean if Hc is high and CO is extremely low? - Answer The engine is either very
lean or there's a misfire.
What does it mean if CO is very high? - Answer The engine is definitely rich, getting too
much fuel or not enough air.
Why is oxygen the best lean indicator? - Answer The levels change during lean mixtures.
Why is oxygen (O2) not a reliable rich indicator? - Answer It is low whenever the mixture is
rich. Rich mixtures burn all available O2.
When did PA implement itd first emissions I/M program? - Answer 1984
In 1990 Congress set the requirements for an enhanced program in the Clean Air Act
Amendments which aimed to do what? - Answer Lower harmful emissions and increase
accountability at the state level.
