Engine rattle ..stumped

[cfoz]

03 dodge 4x4 QC auto trans ... edge ez box with 169000miles ... dont know what this noise is. . the truck runs great . . dont smoke starts easy. The dodge dealer ship said it was injector rattle . . but im not sold! Need imput please. . heres a video of the sound 11 sec on you realy hear it.



YouTube - ‪2003 dodge cummins diesel quad cab 4x4 auto trans‬‏

 

[HBarlow]

I know nothing about EZ boxes or the effect they have on an engine but the light rattle at highway speeds is often caused by a failing FCA in an unmolested engine.

Mine sounded like the rattle of a high compression gas powered V8 with the ignition timing advanced or using mediocre gasoline.

 

[TCDiesel]

Link don't work for Me... Take (POS) EZ off and see what happens. .

 

[cfoz]

ok the link is working look at the vid and tell me what you think... please

 

[JJPage]

Does not sound good, I am thinking an exhaust valve seat. Can you get access to an infrared thermometer, see if the exhaust ports on the manifold are even in temperature while running.

 

[cerberusiam]

Pull the belt off and spin the fan support pulley. If there is any noise, you found it. I was sure the turbo was gone or I had a bad injector until I figured out that the fan support bearing being bad will make noise EXACTLY like that.



Check you tensioner pulley and idler pulley both. I have replaced all 3 in about the same mileage.