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Clanking/rattling when revving or starting engine

EricR

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Eric
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"PowerBeast" - our 2021 F150 Lariat 4x4 Powerboost
Oh, dear!

So what do you do when you need to spudge?

🤔
Well up to now I would have ruined it with a screw driver.

😲
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Gros Ventre

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I had a noise like that. Zeroed in on the transmission when temps were <15ºF. Turend out to be a somewhat low transmission fluid level from new construction.
 

WDWFordGuy

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I know this is an old post, I had a similar sound in my '21 powerboost, when it was hot. I bet under it and pressed on a few things. I found one of the bushings for the exhaust mount was half missing so the hanger was vibrating against the mount.

Havnt been able to track down the bushing, it looks like it's part of the transmission mount. I put some rubber electrical tape on it for now. It's much quieter.
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