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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super-Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

       
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Old 10-31-2009, 01:23 PM   #1 (permalink)
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2004 6.0 question

so my buddy just bought a 2004 F-350 6.0 with 116,xxx miles on it, the truck seems to run really good and everything seems to work fine, but it does something I've never seen before. So when you turn the key on when it's cold you can hear the glow plugs and injectors and what not under the hood, which is normal but after running it he shuts the key off and you can hear the same noise after it shuts off. it runs for approx 30 seconds with no key in the ignition. any ideas?
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Old 10-31-2009, 01:33 PM   #2 (permalink)
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it was a recall on some of the engines i have it on 2 of my trucks
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Old 10-31-2009, 01:36 PM   #3 (permalink)
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should he just bring it to the dealer? he just bought the truck last night so he doesn't have any recall info
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Old 11-01-2009, 02:26 PM   #4 (permalink)
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He has the flash that "shook" the spool valves in the injectors at shut down. There is nothing wrong with it.
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Old 11-01-2009, 02:53 PM   #5 (permalink)
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According to my indy mech, that is a good thing...in case any water whatsoever were to get into the fuel and past the separator, the injectors are able to "spit" everything out.
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Old 11-01-2009, 03:32 PM   #6 (permalink)
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so there's nothing wrong with it? i've never heard a 6.0 do that before
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Old 11-01-2009, 06:16 PM   #7 (permalink)
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Quote:
Originally Posted by Strokin' 6.0 View Post
According to my indy mech, that is a good thing...in case any water whatsoever were to get into the fuel and past the separator, the injectors are able to "spit" everything out.

What?????????????????

Since the engine is not running when this is happening, there is no high pressure oil. Without high pressure oil, nothing gets injected, so nothing could get "spit out"....

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so there's nothing wrong with it? i've never heard a 6.0 do that before
The flash that shakes the spool valves was only used for a short period of time. That's probably why you haven't heard it before. There is nothing wrong with the flash or what it does. But folks complained about the noise. Ford then brought out the "inductive heating" flash to heat the spool valves instead of shaking them. Both flashes were created to deal with rough running on cold starts.
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Old 11-01-2009, 06:27 PM   #8 (permalink)
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It was commonly referred to as the buzz flash and hurts nothing. It is, as stated above, the predecssor to the inductive flash. It helps with a phenom called injector stiction that affected cold starts. It is all done electrically thru the injector spool valves. It is supposedly easier on the FICM than the inductive flash. That is still being debated however.
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Old 11-01-2009, 09:01 PM   #9 (permalink)
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J..INDUCTIVE HEAT (F.I.) FLASH

FWIW...tuner at PHP said fmc updated the inductive heat flash hoping it will eliminate failures of ficm's. For those with this inductive strategy & had ficm failure (possible premature) maybe that is why?

I still have orig. f.i. buzz after shutdown (done 11/06) & for all that do maybe its good we have it, but? Apparently its just inductive flash as being suspect at this time. Anyhow, seem's another crap shoot has been created by fmc.? JMO!
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Old 11-01-2009, 09:05 PM   #10 (permalink)
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Just a temporary solution...

Quote:
Originally Posted by Jared583 View Post
so my buddy just bought a 2004 F-350 6.0 with 116,xxx miles on it, the truck seems to run really good and everything seems to work fine, but it does something I've never seen before. So when you turn the key on when it's cold you can hear the glow plugs and injectors and what not under the hood, which is normal but after running it he shuts the key off and you can hear the same noise after it shuts off. it runs for approx 30 seconds with no key in the ignition. any ideas?
Turn it off in gear if its automatic transmission until a mechanic can determine the problem.
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