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Re: 2003 F250 6.0 poor power
Posted to HD/Fleet Forum on 6/9/2018 1 Reply

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This is what a vacuum gauge would show. [2003 Ford F-250 Super Duty XLT, Engine/Propulsion Waveform]

To get that waveform, I had to stuck a large rag into the intake air inlet to create a small amo... Login to read more.

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