Firing order for 6-cylinder engines: 1-4-2-5-3-6
The piston is at ignition TDC if the synchronous piston is at overlap TDC. At overlap TDC, the intake valves (E) and the exhaust valves (A) are open and both rocker arms must be at the same height.
Ignition TDC cylinder 1 overlap TDC cylinder 5
Ignition TDC cylinder 4 overlap TDC cylinder 3
Ignition TDC cylinder 2 overlap TDC cylinder 6
Ignition TDC cylinder 5 overlap TDC cylinder 1
Ignition TDC cylinder 3 overlap TDC cylinder 4
Ignition TDC cylinder 6 overlap TDC cylinder 2
G01.00-3235-01
Firing order for 8-cylinder engines: 1-5-7-2-6-3-4-8
The piston is at ignition TDC if the synchronous piston is at overlap TDC. At overlap TDC, the intake valves (E) and the exhaust valves (A) are open and both rocker arms must be at the same height.
Ignition TDC cylinder 1 overlap TDC cylinder 6
Ignition TDC cylinder 5 overlap TDC cylinder 3
Ignition TDC cylinder 7 overlap TDC cylinder 4
Ignition TDC cylinder 2 overlap TDC cylinder 8
Ignition TDC cylinder 6 overlap TDC cylinder 1
Ignition TDC cylinder 3 overlap TDC cylinder 5
Ignition TDC cylinder 4 overlap TDC cylinder 7
Ignition TDC cylinder 8 overlap TDC cylinder 2
G01.00-3236-01