Probably one of a few easy things. Did you replace one plug at a time? If not, a couple crossed wires will be it. Recheck wires. Make sure all wires are firmly on each plug., Verify the plugs installed are the correct plugs for your truck, AGSF22FSM with a gap of .044, or others brands a gap of .054. Platinum plugs are OEM. Did you check gaps on plugs you installed? Some get dropped by employees. Don't scrimp with cheap plugs!! If you still have original wires trash them and get a quality set!
Testimonial: "good advise I will double check, "
Three things! did u replace spark plug wires if equiped! bad coil pack! if equiped ! a burnt valve u have to take a compression test of all 10 cylenders
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