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Clatter on acceleration

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Old Nov 15, 2025 | 11:10 AM
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Dstew145@yahoo.com's Avatar
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Default Clatter on acceleration

Still getting an intermittent clatter on acceleration. Has always done it. Undercarriage checked for loose stuff and one heat shield secured. 2020 5.0 100k.
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Old Nov 15, 2025 | 01:56 PM
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From: Flawda
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i noticed this yesterday on my 2015 5.0 176k
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Old Nov 16, 2025 | 02:14 AM
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What octane fuel are you guys using?
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Old Nov 16, 2025 | 08:31 AM
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Are these 4x4 trucks? Maybe iwe? Often a checkvalve. Easy test, turn to 4A or unplug solenoid by brake booster.
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Old Nov 16, 2025 | 08:41 AM
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A video uploaded to youtube would be very helpful. Your clatter maybe someone else's roar. Their roar might be my rattle.
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Old Nov 16, 2025 | 05:39 PM
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Run ONLY 91 - 93 octane fuel...clatter goes away.
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