6.0L Power Stroke Engine and DrivetrainDiscussion 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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There is definately a correlation with my 05' being fully warmed up, and the the outside temp. The colder it is, the more it does it. I have noticed some small splatters of coolant on the overflow tank around the cap, apparently from it "puking" one time or antoher. I'm beginning to believe this noise IS coming from the cap on the overflow. I'm going to order a new one from Ford and see what happens. Anything to not have to listen to the flute quartet while I'm driving!
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The temps in the mid atlantic area have been over 50 degrees and i have not heard the flute sound since the temps have warmed up. I agree that it has to do with colder temps. It could be a innercooler hose getting ridgid in the cold and then leaking air. I have noticed a film of oil around the hot side connection.
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2003 F-350 fx4 supercab 6.0 banks 4" ss turboback ARP Head Studs pillar autometer guages SCT
To eliminate the chance that this may be the degas cap, take the cap off and drive without it. If the flute stops then it is the degas.... Funny thing about my situation is, the "wineglass" sound did not start until my EGR cooler was replaced about two months ago. But one thing is for sure, ambient temp and truck temp play a role in the replication of the sound.
No such thing as a dumb question.... Just a dummy who asks it. LOL just kidding. Yes , degas cap is on the coolant overflow bottle on left side of engine compartment against firewall.
......Been a while since I last checked in. But in that time I've gained some knowledge.
The "whine" or "flute" noise on mine is indeed the pressure cap on the coolent recovery tank. I like the "flute" example. Also expressed by me as; a female moan or high pitched flatulence. It's a tough noise to describe.
To diagnose yourself; After vehicle is warmed thoroughly, pop the hood and while revving engine in park (around 2k RPM) watch the cap on the tank (you can see it in the drivers seat, right in front of you while sitting down, over the steering wheel and under the back of the open hood). When you release the accelerator after the rev up you'll see a puff of steam usually followed by the telltale whine. The steam is seen better in cold climates but it's pretty clear what's happening. Try different RPM's to get it to make the noise. Snap the throttle several times to replicate it. If you put the vehicle in drive, apply the brakes firmly and apply power you'll see a steady puff of steam. The head gaskets are leaking but I believe that at a certain pressure and volume of gas the noise disappears. The symptom goes away but the cause remains
History; Mine has been making this noise for about 6 months and I didn't pay much attention to it. Just before Christmas my flexplate cracked (an unholy noise I assure you). After the replacement of the flexplate and a new injector (eliminated my cold engine - converter lockup chug/severe vibration, another story) I thought my problems were solved.
The "flute" noise remained. A quick trip to a very trusted, outstanding and mod friendly Ford dealership later, the diagnosis was a 99% chance of a bad head gasket(s). The service writer said it was very common especially with chipped trucks but not limited to them. Some extreme examples split the pressure/recovery tank.
Synopsis; With the current incentives Ford is offering, a 2007 172" wheelbase F-350 Lariat is on the way.
The future; The new truck will get intake, exhaust, stereo, lift etc. but NOT any tuner boxes/programmers.
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07' F-350 Crew, long box Lariat. 4" BDS lift, 20X9 MKW rims, 35x12.5x20 Toyo Open Country, stereo, Winch from old truck, Magnaflow exhaust etc. No tuner on this one. New Addition! - 2012 Mustang GT, 6 spd.
Old Truck
04 F-350 Lariat 4X4 Crew Cab 6.0, literally everything but moon roof and PTO. Good stuff: 4" lift w/35" BFG muds, Intake, exhaust, Edge-Juice/Attitude, AIC, Warn 12k Winch, stereo work etc, etc. http://community.webshots.com/album/282528994AiGTsv
(Latest pics at the end of others)
"History; Mine has been making this noise for about 6 months and I didn't pay much attention to it. Just before Christmas my flexplate cracked (an unholy noise I assure you). After the replacement of the flexplate and a new injector (eliminated my cold engine - converter lockup chug/severe vibration, another story) I thought my problems were solved.
The "flute" noise remained. A quick trip to a very trusted, outstanding and mod friendly Ford dealership later, the diagnosis was a 99% chance of a bad head gasket(s). The service writer said it was very common especially with chipped trucks but not limited to them. Some extreme examples split the pressure/recovery tank."
how do you explain this only happening when the outside temps are below 30, also I noticed the boost on the guage is not dropping off quickly when I let off the throttle. as the boost goes down the whistle follows. have no puking from the trucks resevoir or smell of antifreeze [img]/ubbthreads/images/graemlins/confused.gif[/img] [img]/ubbthreads/images/graemlins/confused.gif[/img].
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2003 F-350 fx4 supercab 6.0 banks 4" ss turboback ARP Head Studs pillar autometer guages SCT
I cant replicate the noise unless I am registering boost pressure. Dont know about you guys, but I cant get anymore than 2-4 lbs. of boost pressure when in neutral. In order to replicate I have to be backing out of WOT under max boost situations.
My search for a solution continues as well. To date i have had the turbo changed (worn bearings) and today i changed the degas cap. The noise is still there although for a while (1/2 hour) i thought it was fixed. I will try to see steam coming from the cap tomorrow after it is warmed up. From the responses it seems that this is getting to be a common problem with this engine. It certainly is worse when the air temps are lower. The colder it is the more "fluting" noises come from the engine. When i have the head gaskets changed what should i use for head bolts OEM or something else?
Also forgot to add that i had the CAC boots changed at the same time as the turbo. I also have an EGR cooler leak which still need repair. I do not think that the EGR cooler leak and the noise are related but i could be wrong. 45000 miles on the truck.
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I also have an EGR cooler leak which still need repair. I do not think that the EGR cooler leak and the noise are related but i could be wrong. 45000 miles on the truck.
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Lets not rule the egr cooler out. I did not notice the flute until I got my truck back from the EGR cooler replacement.
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"History; Mine has been making this noise for about 6 months and I didn't pay much attention to it. Just before Christmas my flexplate cracked (an unholy noise I assure you). After the replacement of the flexplate and a new injector (eliminated my cold engine - converter lockup chug/severe vibration, another story) I thought my problems were solved.
The "flute" noise remained. A quick trip to a very trusted, outstanding and mod friendly Ford dealership later, the diagnosis was a 99% chance of a bad head gasket(s). The service writer said it was very common especially with chipped trucks but not limited to them. Some extreme examples split the pressure/recovery tank."
how do you explain this only happening when the outside temps are below 30, also I noticed the boost on the guage is not dropping off quickly when I let off the throttle. as the boost goes down the whistle follows. have no puking from the trucks resevoir or smell of antifreeze [img]/ubbthreads/images/graemlins/confused.gif[/img] [img]/ubbthreads/images/graemlins/confused.gif[/img].
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Mine does it regardless of the temperature. Your problem may be different but from the bulk of the descriptions it seems to fit my predicament. Like I said, the only thing I can figure out is the pressure cap only resonates at a certain gas flow. Take a harmonica and blow through it as hard as you can; It only makes a whooshing air noise. IE; the valve opens up all the way and doesn't bounce back and forth at a given frequency from open to closed making noise.
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07' F-350 Crew, long box Lariat. 4" BDS lift, 20X9 MKW rims, 35x12.5x20 Toyo Open Country, stereo, Winch from old truck, Magnaflow exhaust etc. No tuner on this one. New Addition! - 2012 Mustang GT, 6 spd.
Old Truck
04 F-350 Lariat 4X4 Crew Cab 6.0, literally everything but moon roof and PTO. Good stuff: 4" lift w/35" BFG muds, Intake, exhaust, Edge-Juice/Attitude, AIC, Warn 12k Winch, stereo work etc, etc. http://community.webshots.com/album/282528994AiGTsv
(Latest pics at the end of others)
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