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Engine knocking on cold start-3200 mile truck

Duckhunter18
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Duckhunter18 New Member

Duckhunter18

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Truck ran fine this morning. 1500 5.3L V8. Went to go start it up this evening and heard a loud knock. Shut it down immediately. Video is from the 3rd startup. Decided to drive about 2 miles to the dealer, techs were home but they scanned it for me and said it was throwing a "misfire cylinder 4" code. The knock got quieter and quieter as things warmed up, eventually becoming nonexistant. I'm sure it will be back in the morning. What do you guys think?

 

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