Black Fliters, Heavy Vibration and Hesitation.

Ok, so means there is a few O/O's here that turn wrenches ill ask a question, I'm having a issue that I cant seem to knock down.

I have a Cummins motor 450ST I just did a inframe on it here about 65k or so ago total truck has 468k on her (All 6 injectors were replaced). I keep having fuel filters turning black in a couple of k miles now, I have checked the tanks they seem clean (thought maybe algae) When I climb hills as of late I seem to be shaking like the motor is missing or starving for fuel it also pulses up the hill as if its starving for fuel. also when it makes a right hand hard 90 degree turn the truck will pull power from the accelerator and glide around the turn vs letting me power into it if needed. Does not happen with a left hand turn. I'm also getting heavy Vibration at idle.

The truck is not throwing any codes but as someone that drives it, I can notice quite easy the difference. I thought maybe I was having deteriorating fuel lines but I figured with it being a 2011 and so few miles on it they should not be that bad yet. Only other thing im leaning toward is maybe a bad fuel pump ? or a obstruction in the line ? I cant help thinking its something to do in the fuel system it self vs the motor. This concerned me enough that I deadheaded the truck almost 700 miles back to the house as not to get stuck on the road.

Things I have replaced at the inframe. (I understand some may have no bearing on this but ill list them in case someway in hell they are related.)

New Turbo
Injectors all 6 replaced
Dozer injector replaced
DOC replaced
New Cummins branded DPF Filter
New Alternator
New A/C (whole A/C system was replaced lines and all)
ECM was tuned by Cummins all settings set by Knight were removed and changed back to Cummins Specs.

 

Had it fixed today, The truck had algae in the fuel lines, It was long stingy black looking snot crap. Anyways flushed tanks, lines and did a full PM to the truck. Its back to purring again. BTW wtf ever happened to Biocide I cant find it in the truck stops anymore, ended up having to use there cleaner to flush everything.