Super knock. On cylinder 2

[Subwoofer]

Decided to do a log earlier, got a super knock on cylinder 2.

Has been persistent.
O2 sensors possible are dead/dying?
OEM injectors.
New 2 step plugs around 2K miles ago.

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Anyone got experience with this ? Don’t really want to blow the motor up.

Might try compression test

 

[zomski101]

I got super knock codes when I was playing around with larger spark plug gaps on 2 step colder plugs. Anything larger than .22 and I would sometimes get super knock on cylinder 4 shadow code.

 

[SlowE93]

I got super knock codes when I was playing around with larger spark plug gaps on 2 step colder plugs. Anything larger than .22 and I would sometimes get super knock on cylinder 4 shadow code.

.022
Good to know !

 

[Subwoofer]

I got super knock codes when I was playing around with larger spark plug gaps on 2 step colder plugs. Anything larger than .22 and I would sometimes get super knock on cylinder 4 shadow code.

I see. My 2 step are gapped at 0.20. I wonder maybe 0.18 might make a difference. I’m going to keep an eye on it. It’s looking likely towards the fuel injector, for now