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The Terminator
Terminator Talk
Diagnose my engine KNOCK please...
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<blockquote data-quote="Jimmysidecarr" data-source="post: 10274500" data-attributes="member: 11681"><p>Also make sure you perform good engine forensics and find and correct what ever caused it.</p><p></p><p>It's most likely the result of a detonation event.</p><p>Not only is detonation destructive in and of itself, to even forged pistons, it also over heats them RAPIDLY and they will grow out into the walls, ripping off skirt coating, ring lands, and the rings themselves can also grow out onto the walls and rip out of the piston.</p><p></p><p>Multiple possibilities if that is the case.</p><p></p><p>Pegged MAF lean out, Maxed pumps lean out, Over heated heads with hot spots detonation, too much timing (for the ECTs) and for the fuel octane rating, also a flawed tune which might allow a lean out.</p><p></p><p>The tune can be dead on the money and ask for a certain amount of fuel, but if the MAF pegged the PCM can't ask for the correct fuel, or if the pumps are maxed the fuel can't keep up with the air.</p></blockquote><p></p>
[QUOTE="Jimmysidecarr, post: 10274500, member: 11681"] Also make sure you perform good engine forensics and find and correct what ever caused it. It's most likely the result of a detonation event. Not only is detonation destructive in and of itself, to even forged pistons, it also over heats them RAPIDLY and they will grow out into the walls, ripping off skirt coating, ring lands, and the rings themselves can also grow out onto the walls and rip out of the piston. Multiple possibilities if that is the case. Pegged MAF lean out, Maxed pumps lean out, Over heated heads with hot spots detonation, too much timing (for the ECTs) and for the fuel octane rating, also a flawed tune which might allow a lean out. The tune can be dead on the money and ask for a certain amount of fuel, but if the MAF pegged the PCM can't ask for the correct fuel, or if the pumps are maxed the fuel can't keep up with the air. [/QUOTE]
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Diagnose my engine KNOCK please...
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