All of the following statements are true EXCEPT:

A. when intake or exhaust is restricted the engine cannot bring in enough fresh air and fuel.
B. one cause of an air-fuel mixture that is too lean to burn is a leak in the intake system.
C. after a misfire, whatever remains in the cylinder ends up in the exhaust stream, decreasing the HC level.
D. high HC can be caused by a defective spark plug or problems with ignition wiring.


Answer: C

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