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6.4 problems

  1. 6.4L Problems Forum
    OK, recently installed H&S tuner with the HD300 tune and a 4" straight pipe exhaust on my 08 6.4. for the first week or so after i did that it was running great, lots of power, great mileage and did everything it should have done. THEN, out of no where its not running right.. very little...
  2. 6.4 Motor Problems
    I have a 08 f350 6.4 powerstroke with the SCT extreme livewire tuner, runnin the pre-loaded tunes, 5" strait piped exhaust turbo back, delete pipe has the sensors in place, put the egr delete plates without coolant flow on it yesterday, and a S&B intake...truck has 110k miles on it bought it...
  3. 6.4 Motor Problems
    Truck has 100k miles on it, and was running fine when parked last evening. This morning on start up, had a very rough idle which smoothed out a bit. However, when the accelerator is pressed it runs rough again, and eventually will only muster about 1500 RPMs and produces some whitish-blue...
  4. 6.4 Motor Problems
    08 6.4 Ford F250. The truck smokes when acclerating at times, it did it 3 times yesterday. I haven't had the truck long and its all stock, just ordered a dpf delete exhaust and chip. I'm wondering if its a clogged dpf, I haven't had any check engine lights at the moment, if anyone has had...
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