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Cobra Forums
The Terminator
Engine/Tuning
Detonation damage or another cause?
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<blockquote data-quote="MalcolmV8" data-source="post: 14678969" data-attributes="member: 8854"><p>What made you tear down the motor beside the lower radiator hose coming off and a wet plug? Did you compression and leak down test first? It sounds like the engine was running perfect prior to tear down or an I not reading that right?</p><p></p><p>I'm sure detonation shows itself in many ways but the most common and familiar I've seen is on the sides of the pistons. They look scuffed right towards the top on the sides. Spark plugs usually have signs on them too like metallic speckles on the porcelain and even on the grounding strap. A plug gap that gets closed almost like the piston hit the plug can be another sign.</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 14678969, member: 8854"] What made you tear down the motor beside the lower radiator hose coming off and a wet plug? Did you compression and leak down test first? It sounds like the engine was running perfect prior to tear down or an I not reading that right? I'm sure detonation shows itself in many ways but the most common and familiar I've seen is on the sides of the pistons. They look scuffed right towards the top on the sides. Spark plugs usually have signs on them too like metallic speckles on the porcelain and even on the grounding strap. A plug gap that gets closed almost like the piston hit the plug can be another sign. [/QUOTE]
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Detonation damage or another cause?
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