Quote:
Originally Posted by wbnapier
With 100 octane, at WOT, I hear a crackling sound, which I assume is pinging. I don't know the details of my engine, other than block, heads, and mild build circa 1991.
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A "lean miss" can sound like that sometimes. Once had a holley 450 cfm carb on my GTO ( when I was 17) ... at about 4000 rpm it would start crackling. Luckily I corrected the situation before I melted a piston.