superdave
Proud NOOA Member
- Joined
- Jan 26, 2013
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I am getting part throttle spark knock no matter what octane fuel I use in my 97 5.7. It's better with premium, but still there. I have a Black Bear Tune, and I have sent the computer back to them for a retune, but the issue is still there. I have replaced the knock sensor. Has anyone had a similar issue? I'm guessing it's either a bad EGR or a worn distributor gear, but the no CEL or code is throwing me off.