Port fuel injected engines require intake manifold heating devices.
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Q2: A three-way catalytic converter (TWC)stores oxygen when
Q3: A digital EGR valve has up to
Q4: NO X emissions are caused by nitrogen
Q5: Lower compression ratios reduce NO X emissions.
Q6: A catalytic converter is one of the
Q8: Which of the following systems is designed
Q9: Large amounts of CO2 in the exhaust
Q10: Excessive oxygen in the exhaust indicates an
Q11: Diesel engines emit less HC, CO, and
Q12: Hydrocarbon and carbon monoxide exhaust emissions are
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