The sequence or order in which cylinders must be fired: 1, 5, 3, 6, 2, 4, etc. It differs from the cylinder sequence which starts with cylinder number one and goes to the last cylinder: 1, 2, 3, 4, 5, 6.
FIRING ORDER
Meaning of FIRING ORDER in English
English dictionary of automotive terms. Английский словарь автомобильных терминов. 2012