Mystery to solve and I need Help! - Ford Powerstroke Diesel Forum
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Old 07-26-2013, 06:49 PM
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Mystery to solve and I need Help!

6.0 PS 2004 Excursion 158k miles...
I need help narrowing down whats going on before I fork out too much money on the wrong thing. OK, I had an injector(#7) going out and I decided to try Hotshot Secret because they say (I called) it's designed for 6.0 injectors and 9 out of 10 are success stories! Clearly, I am that 1!! After $80 of diesel went out my exhaust, the injector was replaced. I was told the new injector was bad so they put in another one. Two weeks later, I get a call that it's not running right, skipping. I go and drive it and it's shaking/vibrating. The shop doesn't have the scan to check the cylinders, so they want to take half the engine out to test the compression and I said NO WAY! I got in and drove an hour home.
Here's my clues (symptoms)

shaking when accelerating...I release the gas pedal and immediately press it again and it stops until the next gear change. It runs ok around 65-70mph but you still feel a vibration.

Rough idle!!! My 3 year old says I'm shaking his head HA HA!

Loss of power...3 mornings ago, it just didn't want to back out of the driveway. I got about 25' and that was it. Pulled back down and cut it off. Then tried again and I made it, slowly. Now I turn it "on" not the motor for about 20 seconds (twice) and fire her up and back up.

Oil, oil filter (2nd change since injector replaced) and fuel filters changed 2 days ago. I could still feel the shake but not as bad and i could accelerate through the vibration during gear change. Not yesterday or today.

I've tried to blow it out...pushed the gas all the way to the floor...very little black smoke.

I can smell diesel when I'm driving but I haven't noticed losing fuel. It's not running hot.

It feels like there's a blockage or something. I really don't think it's a cylinder, call it a feeling or something I need some ideas, please! Thanks for reading. Let me know if I left out any important details...
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Old 07-26-2013, 08:24 PM
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There are a number of things that can cause problems as you have described. FICM and injectors come to mind, but don't guess. Take it to a shop that has IDS diagnostic ability (usually Ford). Of course, it would be a good idea to get a comprehensive monitor to possible find data that is out of whack with normal.
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Old 07-26-2013, 08:53 PM
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FICM was replaced earlier this year. No codes. All injectors are working. My next guess is fuel pump? Any thoughts?
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Old 07-26-2013, 09:01 PM
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Quote:
Originally Posted by twoicebergs View Post
There are a number of things that can cause problems as you have described. Take it to a shop that has IDS diagnostic ability (usually Ford). Of course, it would be a good idea to get a comprehensive monitor to possible find data that is out of whack with normal.
Quote:
Any thoughts?


,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

and Hotshots has a money back guarantee FYI
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Old 07-26-2013, 09:05 PM
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I mailed a copy of my receipt and UPC code back last week...HA!! Thank you!!
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Old 07-27-2013, 06:31 AM
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you can check fuel pressure as well you'l just need an adapter, fittings, line, and gauge.

there are some videos on how to check the fuel pump for a 6.0 on youtube as well.

im not sure if this works for the 6.0 but on older diesels you can remove the fuel filter cap (engine bay one) and see if it fills up when you do (key on, engine off) and listen for the injector buzz depending on what flash you have.
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Old 07-27-2013, 08:11 AM
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sounds like an injector that's missing under load. i've seen many trucks that will set a contribution code but not for the cylinder that's currently misfiring. it's quite strange. Some will miss hard on one cylinder cold, then you warm it up and drive it down the road and it misses on another one. This is pretty characteristic of needing a full set of injectors, replacing one or two will get you on the road but eventually you'll need them all.


You really need someone with access to an IDS. I don't know how anyone picks out injector concerns without one, it's shooting blind.

Last edited by sinner6.0L; 07-27-2013 at 08:14 AM.
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