"Clatter Sound"

[shorthorn]

Hey yall... Not sure I can explain this to justice, but I have a question...

First off... Truck is an 05 QCLB 2500 Cummins. 101k, bone stock. I bought the truck at 94k and have had no problems what so ever. First Cummins or diesel for that matter I have ever had.

The question I have is that I have a "clatter" sound, especially below 2200 rpm when the coolant is cold.

Truck makes great power, starts quick and easy every time even at -20 not plugged in. No smoke, unless I really get on it especially if I haven't pulled anything in awhile (but always black, never white or grey).

Sound is almost similiar to a pre-ignition or spark knock in a gasser motor.. Not real loud at all. Have to have all the windows up and radio off to hear it.

I have checked all injector lines, they are tight... Might this be a normal sound for the mighty Cummins?

What do you all think this sound could be? Could it be something I should be worried about?

I tried to take a video this morning to post so you all could hear it, but I wont even bother attaching it as you can't hear the sound in the video.

Thanks for any help yall may be able to give.

 

[cerberusiam]

Commonly called injector rattle. It is pretty normal for the stock injector nozzles. Maybe running additves will help, maybe not.

 

[Prairie Dog]

Common when cold, mine has always done it.

 

[shorthorn]

Thanks guys!... Just wanted to be certain it is normal!

 

[MMeier]

Change fuel brands and see if it changes at all.

 

[wantabe351]

my truck make sound your talking about,but I hear it especially when driving along a wall with the window half down and just riding at about 1500-1700 rpm ....to me it sounds like a gas ping too....