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.

Question

Quizplus · Accepted Answer

The correct statement is that after a misfire, whatever remains in the cylinder (unburned fuel and air mixture) ends up in the exhaust stream, actually increasing the HC (hydrocarbon) level, not decreasing it. High HC levels indicate incomplete combustion, often due to misfires.

All of the Following Statements Are True EXCEPT