1995 Toyota 4Runner

Engine Mechanical problem
1995 Toyota 4Runner 6 cyl Four Wheel Drive Automatic 146000 miles

I recently purchased a 05 4Runner. It was running very smoothly until I took it for its first longer drive into the mountains. Round trip was 260 miles roughly. When I left, the engine was idling fine and smoothly. On the way back, I could feel the gas pedal start jumping when I would push on the accelerator. The engine was all of a sudden idling roughly and when the accelerator was pushed, the engine would sputter and have a hard time accelerating. What's the deal? Clogged fuel injectors? Bad Filters?
August 17, 2010.

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