PA EMISSIONS INSPECTION EXAM QUESTIONS WITH COMPLETE
SOLUTIONS VERIFIED 2024
Station hotline
*General program questions
*Network connections and operations
*Individual user ID, password system access
Customer hotline
*Station locations
*General questions and information
*Station complaints
Sticker department
*Help with sticker and insert orders
Important telephone numbers
Emissions inspector
Performs PA emissions inspections in the Pittsburgh, Philadelphia, South Central and
Lehigh Valley,
A PA emissions inspector may perform
Visual anti-tempering inspection in North region but cannot perform any inspections on
vehicles that require any testing beyond visual anti tampering and gas cap test
A certified repair technician
Delivers emissions waivers
A northern regions emissions inspector
Visual Anti tampering and gas cap pressure test
Emissions program
Focuses on pollution coming from vehicles
EPA pollution estimates that;
, 20% is produced by cars and trucks and 90% higher in cities
Modern vehicles produce
98% less emissions than they did in the 1960s
Three major emissions gasses
Hydrocarbons, carbon monoxide and nitrogen oxides
Diesels produce
Sulfur dioxide
Hydrocarbons are?
organic molecules consisting of only carbon and hydrogen
carbon monoxide
a colorless, odorless, and poisonous gas which is measured in %
High CO emissions are caused by
Rich fuel mixture, high fuel pressure, a stick open heat riser valve, a dirty air filter, faulty
injectors, plugged PCV, Bad air injection pump, engine oil mixed with gasoline
Nitrogen oxides
High emissions are caused by faulty EGR, lean air fuel, overheating, vacuum leaks,
advanced ignition timing
Oxygen
Not harmful measured in %, indicates a lean air fuel mixture,
Smog aka Ozone is created by
Sunlight, hydrocarbons and oxides of nitrogen
Five gas theory
Hydro carbons, carbon monoxide, carbon dioxide, oxygen and oxides of nitrogen
Stoich ratio
14:7.1
Carbon Dioxide (CO2) is a sign of
Combustion efficiency
Oxides of nitrogen
Greatly increased when temperatures exceed 2500F then looses its inert properties and
mixes with oxygen
When running stoich Oxides of nitrogen tend to be
SOLUTIONS VERIFIED 2024
Station hotline
*General program questions
*Network connections and operations
*Individual user ID, password system access
Customer hotline
*Station locations
*General questions and information
*Station complaints
Sticker department
*Help with sticker and insert orders
Important telephone numbers
Emissions inspector
Performs PA emissions inspections in the Pittsburgh, Philadelphia, South Central and
Lehigh Valley,
A PA emissions inspector may perform
Visual anti-tempering inspection in North region but cannot perform any inspections on
vehicles that require any testing beyond visual anti tampering and gas cap test
A certified repair technician
Delivers emissions waivers
A northern regions emissions inspector
Visual Anti tampering and gas cap pressure test
Emissions program
Focuses on pollution coming from vehicles
EPA pollution estimates that;
, 20% is produced by cars and trucks and 90% higher in cities
Modern vehicles produce
98% less emissions than they did in the 1960s
Three major emissions gasses
Hydrocarbons, carbon monoxide and nitrogen oxides
Diesels produce
Sulfur dioxide
Hydrocarbons are?
organic molecules consisting of only carbon and hydrogen
carbon monoxide
a colorless, odorless, and poisonous gas which is measured in %
High CO emissions are caused by
Rich fuel mixture, high fuel pressure, a stick open heat riser valve, a dirty air filter, faulty
injectors, plugged PCV, Bad air injection pump, engine oil mixed with gasoline
Nitrogen oxides
High emissions are caused by faulty EGR, lean air fuel, overheating, vacuum leaks,
advanced ignition timing
Oxygen
Not harmful measured in %, indicates a lean air fuel mixture,
Smog aka Ozone is created by
Sunlight, hydrocarbons and oxides of nitrogen
Five gas theory
Hydro carbons, carbon monoxide, carbon dioxide, oxygen and oxides of nitrogen
Stoich ratio
14:7.1
Carbon Dioxide (CO2) is a sign of
Combustion efficiency
Oxides of nitrogen
Greatly increased when temperatures exceed 2500F then looses its inert properties and
mixes with oxygen
When running stoich Oxides of nitrogen tend to be
