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Engine knocking

Im getting codes 31,32,33,34,41,43,51,52,54, and 55. No matter what the timing’s set at it knocks but it wasn’t doing that before I tweaked with the timing. I’m wondering if my ECM’s bad or something I know that’s an easy thing to blame it on but the motor’s only got 99k miles on it I’ve been...
- Beetlejuice
- Thread
- Aug 18, 2023
- help knocking rough idle running rough
- Replies: 3
- Forum: Engine Performance + Maintenance
‘88 Sierra engine’s knocking, timings right at 0° no CEL but i have 7 codes on my code reader (images below)
- Beetlejuice
- Thread
- Aug 18, 2023
- base timing i need help knocking rough idle running rough
- Replies: 16
- Forum: Engine Performance + Maintenance