I can't see carbon getting into every valve. What was FICM_SYNC, FICM_MPWR, _LPWR and _VPWR? If FICM_SYNC was no, you had a PCM/FICM communictaion issue. If the _LPWR or _VPWR were low (less than 8.0 volts cranking), _MPWR would not be high enough to power the... Login to read more.