Barking/coughing/burping at highway speed, loaded

[WTexasRN]

I bought my 6.0 a little more than a year ago. I’ve had it in the shop about 5 times, three of those; I had to pay the $100 deductible. I’m still glad I got the extended warranty though that is something I rarely do. What’s happening now is that the thing barks at me. It only happens occasionally and only for 30 to 50 miles when I’m pulling a trailer. I have a 26’ bumper pull camp trailer, and it also happened when I pulled a heavy equipment trailer with my son’s ’94 Dodge 4X4 on it. Its sounds like there is a lab sized dog in the cargo bed. When the “bark” occurs, there is a power loss for a fraction of a second sort of like a quick lift and reapplication or a flick of the throttle. Also, there will be a puff of black smoke. It doesn’t happen all the time. It comes and goes but when it starts, it continues for a while. It only occurs mild to moderate application of power. If I put my foot in it hard, it won’t happen. I hope I’ve described this clearly enough. Any ideas?
Thanks for the warm welcome. Any help with this will be greatly appreciated.

[shane0917]

Hey WTexas are you in Midland/Odessa? Midland here... Welcome to powerstroke.org I'm pretty new here myself but there are lots of smart people that will be along shortly to help ya. I would assume they would want your trucks year model and mileage to help you answer your question. Hang in there and someone will find a fix for you shortly. Shane

[WTexasRN]

Yup. I'm in Midland. It'a an 03, 250, FX4, CC, 5spd auto. I can provide vin if needed. Thanks for the reply.

[shane0917]

Man I can't believe nobody has answered this yet. You might want to PM Marc and see if he knows why you are getting the bark.

[mschn99]

im assuming what your hearing is a "pufpufpufpufpuf" back through the intake when you let out of the throttle a but after a load......and if this is what your hearing its perfectly normal. It is actually excess boost pressure coming back through the intake since it had nowere else to go

[WTexasRN]

Hey Marc. I haven't gotten caught up yet 'cause I only get to get on here every couple of days but welcome back and hope you had fun while you were gon. I know certain other people were having a blast.

As far as the “pufpufpufpuf”, sorry, that's not it. I’ve heard that when I was trying to pull a stump and the 3/8” chain I was using broke. I was wondering what that was. Thanks for assuring me on that one. There “barks” come one at a time and while under slight to moderate power as in when the cruse add a little power to maintain speed or when climbing a moderate grade. It does it with or without a load but, unloaded, it’s not as noticeable. It sounds just like there is a barking dog in the back and there is a puff of black smoke also. Does this help any?
Thanks for you reply and the welcome.

Doug

[Worm Drowner]

"Barking/coughing/burping at highway speed, loaded "

Add farting and you just decribed my last date...........

[mschn99]

Originally Posted by WTexasRN

Hey Marc. I haven't gotten caught up yet 'cause I only get to get on here every couple of days but welcome back and hope you had fun while you were gon. I know certain other people were having a blast.

As far as the “pufpufpufpuf”, sorry, that's not it. I’ve heard that when I was trying to pull a stump and the 3/8” chain I was using broke. I was wondering what that was. Thanks for assuring me on that one. There “barks” come one at a time and while under slight to moderate power as in when the cruse add a little power to maintain speed or when climbing a moderate grade. It does it with or without a load but, unloaded, it’s not as noticeable. It sounds just like there is a barking dog in the back and there is a puff of black smoke also. Does this help any?
Thanks for you reply and the welcome.

Doug

Only thing i can figure is it is related to the EGR system.....If i was you i would disconnect the EGR valve next time it does it and see if that stopps it. If it does....then at least you know what the dealer should be looking for and can direct them (just make sure to disconnect the battery cables and dont tell them you diaged it this way to keep yourself from being thrown under the bus)

[TheNimitz]

That's similar to what I've been experiencing lately. I have an '04 Power Stroke and notice it while towing a load. It's like the engine it "missing" for a time or two or three then it will be fine for a few minutes before it does it again. I don't hear any kind of "bark" but I do hear something under the hood of the drivers side area.

Please help. Is the warranty good for the engine up to 100,000 miles?
I have 37,000 on mine. Could this be a turbo issue? Is the turbo considered part of the engine warranty?

[720Deere]

The turbo is definitely part of the 100k warranty, so you are still well within warranty.