I asked this question on another similar thread when debating whether turbo fart\bark is normal or not. If these vanes are spinning at 100-120,000 RPM's, and suddenly this excess boost has no place to go but backwards through the turbo, isn't this going to cause some kind of damage eventually?

If this is a stupid question, please forgive me, I don't know much about turbos.

 

My Ford Dealer insists this is a normal and non harmful side effect. My problem is are we all talking about the same thing? To that end, I recorded a 35 second .mpeg video clip with stereo sound. At about 25 seconds, you'll hear the turbo noise or what I think is the turbo noise.

Is this the same noise everyone is calling a Turbo Fart?

The file is located here http://www.foxgulch.com/Miscellaneous
The file name is TurboVaneNoise.mpg and is 17.8 MB.

You may have to right click on the file and then select "save Target as" to download the whole file to a temporary folder and then play it from the temp. folder.


Larry

 

Great job Larry! That is the exact sound I am having, if that is turbo bark I am having another noise also that actually sounds like a tiny backfire that I was considering the bark after a quick decelleration.

 

Sounds like a boost/turbo performance issue.. Does sound like turbo flutter.. Any CEL or surging included with the noise? Any EGR cycling (audible idle sound changes) during idle time? It’s not the same as the 'normal' noise/bark that is referred to here, and covered as 'Flutter Noise' on Deceleration:

Some 03/04 trucks may exhibit a fluttering noise from the air filter assembly on deceleration. This is a characteristic of the engine and posses no problems with the engine or turbo. No repair should be attempted. Broadcast Messages 1046

But includes 05 as well.. There are Broadcast Messages addressing turbo flutter conditions while under light acceleration/cruise, EBP issues, Sticking VGT actuator, and programming changes as well.. Run it back and have it looked at…

…………….HP……………….

 

FYI, the extra file "TurboVaneNoise-1.mpg" at http://www.foxgulch.com/Miscellaneous is from the same video tape as TurboVaneNoise.mpg but reduced in quality slightly so it's size is smaller (9 Mb vs 17 Mb) Look at either file that works for you, they are essentially the same.

The circumstances for the tape were that our 2005 (Built 10-17-2004 and Yes, I know this is a Sunday but that's what the sticker says!) Ford F350 Super Duty - Super Cab 6.0 L diesel was carrying our truck camper up a small hill. The combination weight was close to, but under the GVWR limit of 13K. I tried to keep steady pressure on the accelerator. The "puttzer" occurred at the crest of the hill when, it seemed to me, less power was being commanded from the engine. When the noise occurs, the truck stumbles or shutters and seems to miss a stride. This noise nearly always occurs at or very near 1500 rpms and shows up more often in non-Tow/Haul mode. If the engine is running at 2100 rpm the sound is there occasionally too but muted, or possibly masked by increased engine roar. The noise is emanates from under the hood and from the front left drivers side area. I don't hear any EGR cycling (audible idle sound changes) during idle time but I might not recognize that anyway!

When I quizzed Ed at Bitterroot Motors he went into the Ford "See no evil, hear no evil, and speak no evil" mode. After I complained again, they quizzed their dealer connection site and turned up message 497000 Engine Noise Concerns... I quote

"Special Service Messages 18155 2003-2005 Super Duty F Series/Excursion/E-Series 6.0L Flutter Noise on Decleration-Some 2003-2005 Super Duty F-Series /Excursions and 2004-2005 E Series Vehicles Equipped with a 6.0 L Diesel engine may exhibit a flutter type noise from the air box/intake area on deceleration. This noise typically occurs when decelerating after heavy acceleration. The noise is a normal characteristic of the engine and has no impact on engine or turbocharger durability. No repair attempt should be made for this condition. Effective date 09/15/2004."

OK, I say, but I want (1) to be sure the noise I hear is generated by 497000/18155 and that (2) 40,000 miles down the road, I don't have a $2500 turbo charger bill and (3) I didn't think I was accelerating heavily.

Otherwise, love the truck! Improved turning radius is great and the 6.0 and worked over auto trans seem ideally mated. Much better than my 1999 7.3L.

Larry

 

I think it sounds like rattling sheet metal.

If a person's turbo makes this noise, does that mean it needs to be replaced or risk failure?

My truck makes the noise only when I make it (floor the accelerator and let off quickly). I try to avoid these circumstances now. It does sound like air escaping back through the turbo.

My truck does not have any problems, should I insist on a turbo replacement?

 

"Noise when I decelerate?"

This is pretty easy for me to figure out...It's my wife yelling at me...

..."IT'S ABOUT TIME YOU SLOWED DOWN! WHAT ARE YOU IN SUCH A HURRY FOR? GOT A HOT DATE WITH YOUR GIRL FRIEND?" etc..etc...etc...

 

Are these engines really just that more prone to clogging up than other diesels?

 

It sure is looking that way... The EGR was installed to the 6.0 for exhaust NOX control per EPA regulations... Unfortunatley with the high sulphur content in most diesel fuel carbon and soot developes in this part of the "air management" system... Somewhere I read that sulphur content in diesel fuel is suppose to be lowered in the near future... Since having 2 EGR's replaced and 2 turbos replaced with less than 20,000 miles on my 04 I'm willing to try anything??? I'm currently into about 1000 miles on the 2nd turbo and so far no problems... I use about 10 ounces of "Power Serve" fuel additive gray bottle from Walmart with every fill up...

 

Ya i use diesel kleen in mine also with the EGR unplugged...Anyone know how exact ya have to be with the diesel kleen, what happens if you use 2 or 3 more ounces than suppose to any bad effects?

 

Bringing this one back up. I have 2800 miles on my KR, still love it. But I am getting concerned about the flutter. It is happening more and more frequently. I'll accept the premise that it's normal, don't like it, but I'll accept it.

But what is considered excessive boost and when should I get concerned\start pushing for a new turbo? Is 5-10 lbs excessive? It is regularly occuring to me at this amount of boost. There are other times that at 20 lbs it will not when I think it should be 'fluttering'.

Any opinions?

 

Quick update. Took a look at the cover on the airbox, very warped. I stopped by the dealer to have them look at it.

Diesel tech says "It's normal, won't find a truck out on the lot without it warped."

I ask "So I shouldn't worry about the dirt getting sucked into the engine?"

He says "Let me take a closer look at it. Yeah, we should replace the cover, I see a dirt trail starting."

I say "Sounds better than a $13-15K warranty bill for engine repair."

I am quite sure that if I hadn't pushed the issue with him, he wouldn't have done anything about it until I show up with a blown engine down the road. I am going to have them replace it and then will be looking at an aftermarket filter\airbox.

PS I looked at my other 6.0 that is by my shop right now. It too is warped, but not nearly as bad and no dirt trail.

 

i think they're right it sounds like the turbo, i have an airaid intake on my 6.0 and it makes that sound a lot, its just because the excess boost press has nowere to go, and if you look under your hood u will see that the intake is on the drivers side

 

I had same problem , bark sound. Dealer said it was normal but kept getting worse. engine light finely came on and it was found to be too much back pressure with no where to go. Ended up to be a pluged up cat . Dealer replaced the cat and that fixed the problem .I just ordered a test pipe so it will never happen again.

 

Another update. I plugged my EGR back in (it fell off) and the bark\flutter stopped. Anybody have any guesses on that?