Engine codes

tkocurek64

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Does anybody know the remedy for engine code 300 on a silverado 2500 with the 6.0???

The scanner said i had a random missfire
 

Bigredmariner

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Check plugs, coil pack, injector and compression. The code should also be telling you which cylinder. Last time I had the code it was a burnt intake valve and wasn't a simple fix.


Posted from my iPad via Tapatalk HD.
 

tkocurek64

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The code translated to a random misfire meaning more than one cylinder
 

tkocurek64

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They look original but I just changed them. And it didn't seem to help
 

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