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07' White Diamond EXT
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475 Posts
Discussion Starter #1
How come when I gun it (WOT) in my 07' Escalade Ext I hear crackling noises coming from my engine?
 

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Cadillac
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19 Posts
I hear the same noise, took it to the dealer along with a few other issues and they said they could not duplicate the problem. (of course)
 

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Sedan de Ville, CTS
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4,764 Posts
Spark knock?? Need to increase the octane of the gasoline you are buying.

Run tank almost dry. Fill up with highest octane you can find.
 

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Cadillac
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139 Posts
Its your valves floating due to low octaine or bad gas. I read your post the day you posted it. I couldnt figure out what you were trying to describe. But the other day wile leaving a toll plaza I floored my ext for the first time. The valves were floating so bad that I thought the engine was blowing up. I think it is very hard today to find good gas. It might have 93 octaine but it might have other impurities that degrade the gas.
 
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