Technician a says that a cracked exhaust manifold can affect oxygen sensor operation. technician b says that a clogged air filter element won't affect emissions. who is correct?

a. both technicians a and b
b. technician b
c. neither technician a nor b
d. technician a

tech A only

Explanation:

Technician A is right because a cracked exhaust manifold allows more oxygen into the exhaust stream, which affects oxygen sensor voltage. Technician B is wrong because a clogged air filter raises Hydrocarbons (HC) and also affects O2 (Oxygen) and CO (Carbon Monoxide) levels.

you have to first get good enough where you are an ace or master, then some of the creators could make you a mod. (this is pretty hard to do though)

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