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  1. Ford Doctor

    Under hood chirping and light squealing

    Chirping noise on acceleration can point toward an exhaust leak - a common pattern failure on 2011 6.7L engines is a cracked EGR tube which leaks at the flex joint. It is usually bad enough to be quite obvious though as it will leave soot in the area and under the hood. The leak can also damage...
  2. Ford Doctor

    coolant filter for the 6.0

    Please forgive my asking as I defer to your experience and observations. I am at a loss as to why a coolant system filter is necessary. What is the reason behind filtering the coolant and what are the benefits.
  3. Ford Doctor

    COLD weather normal engine oddities

    Let's try an experiment, shall we? :cool: You sleep outside tonight in the 20 degree weather and in the morning we will all come and wake you up and watch you smoke, chug, fart and rattle when we expect you to jump right up and sprint! :roflmao (sorry, I couldn't help myself)
  4. Ford Doctor

    Got my new style HFCM Drain plug

    I had a brainstorm while at work one day, read the following article I wrote as a result. HFCM Water Separator Drain Plug Upgrade I heard a rumor a couple of weeks ago that the plugs were on backorder due to unexpected demand. :rolleyes:
  5. Ford Doctor

    03/04 Harness Recall -

    Ron, that is what I have tried to explain to some of those hard headed stubborn 6.0 owners over at TDS. Most of the trucks that roll out of my shop having any of the recalls done whether it's the harness, sensors or re flashing, they do run much better. Then again, sometimes a fresh EGR valve or...
  6. Ford Doctor

    COLD weather normal engine oddities

    Yes, the 6.oL does something very similar. The VG Turbo can close off the vanes essentially performing the same function that the back pressure valve on the 7.3L did by restricting the exhaust flow out of the engine. This allows the heat from combustion more time to warm the engine. It is also...
  7. Ford Doctor

    F350 front end

    Check your sway bar bushings (and end links). I have seen many of the bushings loosen and cause a knocking sound over bumps. It takes very little wear for them to make noise and you can only feel the looseness with the truck on the ground. The reason the noise may have gone away is that you may...
  8. Ford Doctor

    Changing Injectors -

    In regard to the return fuel lines, you might want to invest in replacing all of the rubber hoses and the spring clamps. Even when these trucks were new I always had a problem with them hardening and leaking. I also found that the spring clamps tend to lose their strength as well. Be really...
  9. Ford Doctor

    Glow plugs

    You're gonna wish you knew about this! Actually, the retention clip for the under valve cover harness tends to weaken allowing the connectors to slowly slide off. They usually cause a check engine light and a miss before actually falling off. This is actually quite common and unfortunately for...
  10. Ford Doctor

    6.0L Questions

    Stock boost specifications for the 6.0L is 22-25 PSI. Anything else above that is considered over boost and the cause of head gasket failures. An occasional spike is permissible and considered normal.
  11. Ford Doctor

    to RMS or not to RMS?

    But then again... the rear main seals on these engines rarely fail. It's easy to assume that this is the case because the oil collects at the transmission bell housing right under the seal. The truth is, almost every known source of oil leaks on the 6.0L ends up showing at the bell housing. In a...

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