Technician A says that with a vacuum leak, an engine with an oxygen sensor feedback fuel system can run fine when cold but rough when hot. Technician B says that advanced ignition timing will often cause an engine to run hot. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question

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The Answer of Technician A says that with a vacuum leak, an engine with an oxygen sensor feedback fuel system can run fine when cold but rough when hot. Technician B says that advanced ignition timing will often cause an engine to run hot. Who is right?
A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Technician a Says That with a Vacuum Leak, an Engine