Diesel Bombers - need help asap rouph idle

asap rouph idle

Im in need of help bad bought a truck YESTARDAY its an 05 cummins 2500 have have 3 first gens and one 2nd so im new to the common rail. I.picked up truck ran great throughout the day my bat gauge went to zero the kid had subs and a light bar wired in. I was driving home and the truck started sputering the truck then threw an engine light followed by all the lights in dash turned on abs, brake the radio cut off and I took it to get pluged in it through 9 codes all being power related it then barly ideled and when turned off would not turn back on without a jump and when it did it ideled poor. on way home it would not go over 30 finaly shut off I replaced newer batts and unwired his janky subs and light it seemed fine drove home parked it and came out this morning and started it still had engine light on and I noticed somthing new it was smoking a lot of whiteish blue tinted smoke the engine light went away after a little time and the bat gauge came back to about normal I.believe the altenator is junk truck has about 226k on it and is stock no chip truck currently starts but has a rouph smoky idle injectors right? But a month ago the old owner had injectors replaced soooo anyone that can help is a huge help can it be the alt or low power did it having low power do damage to new injectors or is it something diffrent please bring me good news
Thank you

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