9.
10.
11.
12.
A(n) _______ mixture will reduce engine power, foul spark plugs, and cause incomplete burning.
A. stoichiometric
B. overly rich
C. extra lean
D. symmetrical
results when an overheated surface in the combustion chamber ignites the air-fuel mixture
prematurely.
A. Detonation
B. Asymmetrical combustion.
C. Hollow combustion
D. Preignition
Abnormal engine combustion is being discussed. Technician A says to find the cause of spark knock or
preignition pinging in the engine, first check the ignition timing with a scan tool. Technician B says if the
check shows engine timing is correct, spark knock is the problem. Who is right?
A. A only.
B. B only.
C. Both A and B.
D. Neither A nor B.
True or False? Diesel fuel can produce more cylinder pressure and vehicle movement than an equal
amount of gasoline.I need a answer Chapter 40