92' M11 mechanical pump???issues

ok just got in from the truck again well i took a minute to check out the fuel system thats visible to eye to see if there were any visible leaks i found one but tigtgened it up and it appears to be all buttoned up in terms of fuel leaks. now shes still running from a 5gal tank and she is pulling fuel not the most but she has pulled, plus the return has been throwing out as well visually. i was having a problem even getting it to crank and stay running it will stay on for like 1-2 mins idle will be very steady then you try to rev and it was still lazy to rev with hardly no response to anything in throttle moving.
the last time i got it to run before coming in she stayed running long enough to suck up 3 quarts of trans fluid then cut off at idle.

Does this engine have a secondary pump of somesort? electrical transfer pump?

I had decided to pull off filters to see if they had fuel and both were only filled to about 1/4 way through both the feed and return side. I filled them back up and still the same crappy start,then runs,crappy non repsonsive reving and then cuts off.

 

am i stuck with nothing else but to pull of pump and have it checked rebuilt'?

 

if it is sucking in air i cant find a wet spot anywere from it leaking? truck was running prior to this but had been sitting a while. Really only used as a yard dog. But was running locally before being used in yard.

i noticed on the driver side rear top part of bellhousing theres a alumium block looking transfer block of somewort which looks to have fuel lines going in and out of it. Im about to disconnect the line right off the back of the pump and feed it right off the 5gallon tank up front insteaD of thru all of the fuel lines and primary filter base to see if it runs any better wow what a mission.

I was hoping omeone could just tell me it would be an easy fix in terms of searching for problem.If its leaving filters somewhat empty wouldnt it mean pump isnt working in order ot fill them back up again????

 

i dont know where to get a fuel pressure reading off this type of system is there a port on the fuel pump to do so? and what should the pressure be? i
to me it seemed to have wasted more fuel then what it should have wasted from just sitting idliing.

i just hate pulling off this pump as i need that special curcved wrench to get to the bolt on the back side of pump close to the block uuuggghhh...

 

what screen filter? i have only changed the round external filters. were is this screen type filter located????