Sounds kind of like raw fuel is being dumped into the tailpipe to me. We used to see this sometimes with carbureted engines, but I thought fuel injectors pretty much stopped this from happening.
- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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