Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
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Melted pistons.
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Head gasket breakdown or non-function.
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Warped cylinder heads.
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Crankshaft and connecting rod discolored.
Engine Overspeed Causes
If an engine has been run faster than design capability (redline), and has caused damage as a result, it may be a result of one of the following conditions:
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Leaking or failed turbocharger (TC) oil seals.
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Oil evident in the intake runners and compressor side of the TC.
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Starting fluid use or alternative fuel added to the engine such as ether.
Engine Overspeed Results
The following are indicators that an overspeed event took place:
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Valve train damage.
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Pushrods that are bent (4).
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Broken valve bridge buttons after cylinder head removal (2).
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Rocker arm tip damage (1).
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Dry or rusted cylinders from the use of ether, propane or nitrous oxide.
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Piston to valve contact.
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Cam gear pin shear.
Lack of Oil Pressure
Lack of lubrication causes rapid bearing wear or bearing to seize.
