i once had a chevy that slipped into a pond and got a little bit of the wrong fluid in the fuel line.

what would happen is the fuel filter would get full and the fuel wouldnt flow quite as fast so the engine would get bogged down. without the right mixture of fuel and air you loose power. after reving it up a couple of times the fuel pushes through and it runs alright.

maybe you need a fuel filter?

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1999 F-150 AirRaid, 4.10 gears, tint, superchip, see my gallery for more.