PA EMISSIONS INSPECTOR CERTIFICATION
QUESTIONS
Station Hotline - Answers :(888) 265-5909
Customer Hotline - Answers :(800) 265-0921
Sticker Department - Answers :(717) 705-2182
An emissions inspector must meet what requirements? - Answers :Be at least 18 years
of age
Have a valid driver's license
To deliver emissions waivers you must become a(n)... - Answers :emissions Certified
Repair Technician (CRT)
To become a CRT you must... - Answers :Have a valid driver's license
What is the Northern-Emission Inspectors Certification program? - Answers :Limited to
performing the visual antitampering check and gas-cap test.
Upon successful completion of the N-EIC program you will receive.. - Answers :An
emissions inspection ID card from PennDOT that allows you to perform inspections on
vehicles registered in the Northern Region counties only.
Air pollution - Answers :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... - Answers :Human-made
Major Pollutants - Answers :Hydrocarbons (HCs), carbon monoxide (CO), and nitrogen
oxides (NOx). (released from fossil fuels like gasoline and diesel)
Hydrocarbons - Answers :Unburned fuel of any class of organic compounds composed
of carbon and hydrogen
Carbon Monoxide - Answers :Colorless, odorless, and poisonous gas. Created when an
engine burns HV in the presence of O2.
Oxygen - Answers :Too much or too little can cause improper combustion and result in
pollution
Ozone (Smog) - Answers :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) - Answers :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 - Answers :The relationship between HC, CO, O2, CO2, and NOx are
the same in all gasoline engines.
Stoichiometric Ratio - Answers :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? - Answers :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? - Answers :It runs rich,
meaning combustion forms more CO and less CO2.
What does it mean if Hc is high and CO is extremely low? - Answers :The engine is
either very lean or there's a misfire.
What does it mean if CO is very high? - Answers :The engine is definitely rich, getting
too much fuel or not enough air.
Why is oxygen the best lean indicator? - Answers :The levels change during lean
mixtures.
Why is oxygen (O2) not a reliable rich indicator? - Answers :It is low whenever the
mixture is rich. Rich mixtures burn all available O2.
When did PA implement itd first emissions I/M program? - Answers :1984
In 1990 Congress set the requirements for an enhanced program in the Clean Air Act
Amendments which aimed to do what? - Answers :Lower harmful emissions and
increase accountability at the state level.
What was the 1992 EPA mandate in accordance with the Clean Air Act? - Answers :PA
required a vehicle emissions I/M program be implemented to increase air quality and
decrease pollution.
In 1997 PennDOT implemented an enhanced decentralized vehicle emissions
inspection program that featured what? - Answers :Tailpipe testing of vehicle exhaust
emissions
Our goal? - Answers :Clean air, PA emissions inspection program is part of the state's
plan to clean the air and keep it clean in the future.
QUESTIONS
Station Hotline - Answers :(888) 265-5909
Customer Hotline - Answers :(800) 265-0921
Sticker Department - Answers :(717) 705-2182
An emissions inspector must meet what requirements? - Answers :Be at least 18 years
of age
Have a valid driver's license
To deliver emissions waivers you must become a(n)... - Answers :emissions Certified
Repair Technician (CRT)
To become a CRT you must... - Answers :Have a valid driver's license
What is the Northern-Emission Inspectors Certification program? - Answers :Limited to
performing the visual antitampering check and gas-cap test.
Upon successful completion of the N-EIC program you will receive.. - Answers :An
emissions inspection ID card from PennDOT that allows you to perform inspections on
vehicles registered in the Northern Region counties only.
Air pollution - Answers :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... - Answers :Human-made
Major Pollutants - Answers :Hydrocarbons (HCs), carbon monoxide (CO), and nitrogen
oxides (NOx). (released from fossil fuels like gasoline and diesel)
Hydrocarbons - Answers :Unburned fuel of any class of organic compounds composed
of carbon and hydrogen
Carbon Monoxide - Answers :Colorless, odorless, and poisonous gas. Created when an
engine burns HV in the presence of O2.
Oxygen - Answers :Too much or too little can cause improper combustion and result in
pollution
Ozone (Smog) - Answers :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) - Answers :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 - Answers :The relationship between HC, CO, O2, CO2, and NOx are
the same in all gasoline engines.
Stoichiometric Ratio - Answers :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? - Answers :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? - Answers :It runs rich,
meaning combustion forms more CO and less CO2.
What does it mean if Hc is high and CO is extremely low? - Answers :The engine is
either very lean or there's a misfire.
What does it mean if CO is very high? - Answers :The engine is definitely rich, getting
too much fuel or not enough air.
Why is oxygen the best lean indicator? - Answers :The levels change during lean
mixtures.
Why is oxygen (O2) not a reliable rich indicator? - Answers :It is low whenever the
mixture is rich. Rich mixtures burn all available O2.
When did PA implement itd first emissions I/M program? - Answers :1984
In 1990 Congress set the requirements for an enhanced program in the Clean Air Act
Amendments which aimed to do what? - Answers :Lower harmful emissions and
increase accountability at the state level.
What was the 1992 EPA mandate in accordance with the Clean Air Act? - Answers :PA
required a vehicle emissions I/M program be implemented to increase air quality and
decrease pollution.
In 1997 PennDOT implemented an enhanced decentralized vehicle emissions
inspection program that featured what? - Answers :Tailpipe testing of vehicle exhaust
emissions
Our goal? - Answers :Clean air, PA emissions inspection program is part of the state's
plan to clean the air and keep it clean in the future.
