currently have a loud injector knock, i know something is wrong. i am worried about melting a piston. is there any symptoms that will show? EGT?.....thanks

 

check your oil level, if it is overfilled, you have a failed injector and needs to be replaced.

melted pistons will be caused by sustained excessives egt's. a bad injector will cause smoke, poor running, low power, and if it is cracked or dumping fuel, it will wash the cylinder(which will cause scoring) and fill the crankcase with fuel(causing dilution of the oil) which isnt great for bearing and such.

 

oil level is not rising but it knocks horribly.....could a cp3 make this noise?

 

When i melted my pistons, my oil kinda had a greyish color to it. not to noticable but if u looked close you could tell. Of course mine melted bad enough i could hear metal going through the turbo

 

oil level is not rising but it knocks horribly.....could a cp3 make this noise?

absolutely the cp3 can sound like a injector knock,been there had it

 

Rich-not sure if you are running a rail gauge but did you know your rail pressure? also did the truck seem to lack power at all? or did it just rattle? im really concered bc when i turn up my mp8 it gets louder which leads me to believe its injectors, but i am not leaking diesel into the crack case.

 

powerstrokin- with some of the modules and downloaders, there is increased timing rattle and some injector noise that comes with them.

 

i understand that, but once i remove all boxes and my smarty it still rattles.

 

oh i see, dang that can get expensive in a hurry.