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Also check the air intake hose. Ours had a small hole in it and a worn seal at one end. Replaced it. Instant fix. My # 1 guess would be a vacuum leak, as this truck is 14 years old. Replace every single vacuum hose. Very inexpensive. Do them one at a time as to not get confused. Of course then there is plugs, plug wires, distributor cap, rotor, O2 sensor, intake manifold gasket leak, blown head gasket, and a possible burnt valve.

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18y ago

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