Ignition Timing

ENGINE 3,4L / INLINE 6
Base Timing [1][2] 10° ± 2° BTDC at 800 RPM
Idle RPM 800 ± 50
CO [4][5] 0.7%
CO-Limits [4][5] 0.2 - 1.2%
[1] engine at operating temperature and vacuum hose(s) disconnected
[2] timing can only be checked, no adjustments are possible
[4] check CO upstream catalytic converter (at access port if equipped)
[5] oxygen sensor disconnected