I have a 2005 dodge cummins. Within the last 3000 miles replaced injectors cp3 and did a fass fuel system. Injectors are industrial injection 60hp. After i installed them started right up ran as it should i ran the over head all was good. About a week later it started a rattle only at full temp under load. I drove it a few more weeks wasnt crazy loud but could hear it. So i bought a smarty jr and programmed as soon as i take off after programming it to tow tune i hear a knocking fairly loud. So i stop put it back to stock and its still there. Starts easy a slight white haze at cold start, idles smooth no noise rev it in park no noise. Put it in gear and power brake it and it start knocking around 1500 rpm seems to quite down around 1800 rpm. And it only does it at full temp. Any help apprciated thanks

 

Fresh and full oil?

 

just asking did you buy the right injectors for your year of truck?
did it make any noise before you change the injectors?

 

Yes all fluids good and no did not make noise before changing injectors after changing started rattling than turned to a knock

 

And yes I order the right injectors didn't even think to check to make sure they were the right ones but Gona pull them this weekend and check

 

because if there no knock before the new injectors that means to me it the injectors related problem.
Plus I would phone industrial injection and talk to one of there tech guys
you did put the copper washer back on.
don't get mad just try to help narrow down the problem

 

Yep copper washer installed and I was assuming if was gona be a fault injector I've talked to industrial all they can tell me is send them back for testing this is my first cr Cummins just wanted to get a experienced cr guys opinion before I rip her apart

 

has to be injector problem. do you have your old injector or were the junk

 

They went back as cores it ran fine but they were weak originals had 280k but yall are confirming what I was thinking so guess there gona come out this weekend thank

 

did you put new ones in or refurbish ones
when I did my motor I put new bosch high performance ones in cost me about 2600 bucks canadian