Fuel or Ignition Problem?

Ok... another great round of WTF is wrong with my Blazer this time :P
 
Specs:
96 Balzer LT 4dr
4.3L Vortec V6
169k Miles
 
Now here is what the problem i am trying to figure out...
 
I just replaced the fuel Filter on the truck (4+hr job in the freezing cold ) and I filled it up and poured some Fuel cleaner in for good measure
 
Now... After a week's worth of driving, after i let it warm up and drive off, I will give it gas and it will seem like the old filter was still on, like thier isn't the normal amount of gas heading to the injectors.
 
In the process of finding a fuel pressure tester, but i did try the pressure release valve to see if thier was somewhat a good amount of pressure and it seemed it was high when i opened it up.
 
I checked the Distributor and wires to see if thier was any loose connections and those were on good.
 
So my thoughts are that either the fuel pump needs to be replaced ( which i know when they go, they go dead) or the fuel spider is hurting
 
So has anyone have had this problem before or can lead me in a right direction??

I would first start by getting some ISO-Heat and dumping atleast 2 bottles of that into the gas tank when you fill up.  This will remove water from the fuel.  It is possible that you have gotten bad gas with excessive water in it and that is what is causing your poor performance.

wow... I didn't think of that... I did have a notion that my fuel is not in the greatest shape as i have been filling up at different station around the valley (Gas at 3 bucks a gallon) and i think I am going to start just heading to just one...
 
But i will try that and then see if it keeps up... Thanks Kyle (huggles from the misses)  

Bad gas or water in gas is often overlooked.  Hope it solves your problem!

UPDATE:
 
It worked! Got a full tank of Hess gas, which has been the gas i have been pouring in the truck since we bought it, and through in so ISO-Heet, shook well and started to drive around a little... it now is running good :)
 
Thanks a bunch Kyle :)  

Glad it was a cheap fix!

You may want to run a can of ISO-heat in the system for the next few fuel fillups to get rid of any residual water that may be floating around in there.  Its cheap enough.  Just pour it in before you fill up to allow for adaquate mixing.