PA Emissions Inspection Exam Questions and Answers 100% Pass
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Course
PA Emissions
Institution
PA Emissions
PA Emissions Inspection Exam
Questions and Answers 100% Pass
What health problems can pollution cause? - Answer- Respiratory issues
What percent of air pollution is caused by vehicles? - Answer- 20%
How much less air pollution do we have now than in the 1960s? (%) - Answer- 98% less
What is th...
PA Emissions Inspection Exam Questions and Answers 100% Pass What health problems can pollution cause? - Answer - Respiratory issues What percent of air pollution is caused by vehicles? - Answer - 20% How much less air pollution do we have now than in the 1960s? (%) - Answer - 98% less What is the average thermal efficiency? (%) - Answer - 20% Where does 80% of the rest of the fuel go to? - Answer - Friction, heat, and emissions What are the 5 major pollutants? - Answer - Hydrocarbons (HC), Carbon monoxide (CO), Oxides of nitrogen (NOx), Sulfur dioxide (SO2), and particulate matter What are hydrocarbons? - Answer - Unburned fuel of carbon and hydrogen What are hydrocarbons emitted through? - Answer - Incomplete combustion and fuel evaporation What are hydrocarbons caused by? - Answer - Misfire, rich, ignition timing, engine deficiencies, and fuel injectors What has lowered hydrocarbons? - Answer - OBD 2, component controls, fuel delivery, ignition, emissions system, and EVAPs Can you see or smell carbon monoxide? - Answer - No Is carbon monoxide harmful or nonharmful? - Answer - Harmful How is carbon monoxide made? - Answer - Incomplete burning of fuel What is carbon monoxide caused by?` - Answer - rich, dirty air filter, fuel injectors, high fuel pressure, defective sensors, plugged PCV valve, heat riser valve stuck open, air pump malfunction, oil diluted with gas How is nitrogen oxide made? - Answer - Combustion of fuel at high temperatures What is nitrogen oxide the cause of? - Answer - Acid rain What type of health issues does nitrogen oxide cause? - Answer - Respiratory issues What is nitrogen oxide caused by? - Answer - lean, defective EGR, high temperature, vacuum leaks, advance ignition timing What can too little or too much oxygen cause? - Answer - Improper combustion What is too little oxygen caused by? - Answer - rich, dirty air filter, fuel injectors, high fuel pressure, defective sensors, restricted PCV valve, EVAP purges at idle What is too much oxygen caused by? - Answer - lean, misfire, vacuum leak, exhaust leak Where is ozone/smog made at? - Answer - Ground level What creates smog? - Answer - Oxides of nitrogen and hydrocarbons mixed together in the sunlight What health issue can smog cause? - Answer - Damaged lungs What is particulates? - Answer - Dirt, dust, etc. How are particulates made? - Answer - Combustion What is the stoichiometric level? - Answer - 14.7 parts air to 1 part fuel Is the mixture lean or rich during a cold start or acceleration? - Answer - Rich When are hydrocarbons consistent? - Answer - 14.7:1 When are hydrocarbons high? - Answer - When rich or lean
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