Am I hearing things? Uneven Idle

[jhenegh]

I think I have a problem but I don't know what. Idle is slightly uneven below 1000 rpm. Can't feel anything off above that. It ever so slightly will shake the truck from time to time. Sees to be more noticeable in the last month/ 600 miles and when the truck is warmed up. Admittedly, the water temp was only between 120-150F while this video was shot.

Here's a video. Have a listen:

https://www.youtube.com/watch?v=oBXXnSNY26c

Let me know what you think. Stats are below on recent work of 2600 miles ago

Thanks

 

[IDIoit]

i didnt hear anything odd, with the down pipe that short, its bound to be erratic.

i would never run my engine without some kind of filter on the turbo. JM2C

 

[jhenegh]

http://youtu.be/SThfObho-y4

Here's another after pulling 6,000lbs 60 miles home at 60mph

I hear a more knocky sound

 

[OLDBULL8]

I dunno, dog sounds like he/she has a sore throat.

 

[Diesile]

Yeah, sounds a little "barky" after the pull.......
I don't have 20/20 hearing but that sounds like a healthy diesel to me. It doesn't take much to give the engine a shudder at idle.
I'd be more inclined to evaluate it on the basis of it's overall behavior. Pulled well and clean @ heavier throttle etc..

 

[bullfisher]

You know your truck better than anybody, but it sounds good to me. If its clicking under a load I'd start with huntin down a leaky injector.

 

[jhenegh]

It's clicking under load. Yanked 10,000lbs about 60 miles yesterday and in OD on the flat between 1900-2000RPM you could definitely feel it and hear it. Need to find some time to put the truck in the garage for a bit

 

[Greg5OH]

if its clicking and missing under load id say injector too. hard ot hear in the video, but sometimes feeling is believing.

 

[jhenegh]

http://youtu.be/tf3xWAVKf3g

Today's video. Pulled the injectors after and will be getting them pop tested. We shall see...

Go to 1:05 and watch from there. That where I "hear" my miss/skip...