3406b 4mg47463 issue with fuel

• Truck felt like had no power boost would not go past 15lbs . My primary filter was clogged with sludge from tank so cleaned tanks out replace filters all new fuel lines new.
  I took filter off diesel is clean now only thing it’s filled halfway only when I take out. I drove the truck and still boost is 15lbs but now I feel power going up hill but boost don’t go up unless guate is no good. When filter was dirty it would not acelerate more then 60 once changed ran good. But now everything is clean and new air filters and fuel lines. Only thing I have not changed is the transfer pump. Would that be the issue with fuel not staying in primary filter. I have a rtlo16913a with 3.70

 

GB it was running good till my filters clogged up with sludge from fuel tanks after changed fuel filter ran good again. Today i changed a broken fuel line from the secondary filter and all other ones are new my primary filter is staying half empty. Fuel in filter looking clean now.

 

Hi Wore out thanks for your response I noticed today that the fuel return line from the pump to the tank is leaking would that cause any issues?

 

I also changed the fuel transfer pump the old one the stem was stiff did not push in unless I forced it and the new one had a little play in and out but still the same today ram real good in morning but by evening when was on last load would go past 60 felt like no fuel again if whenever you can get a chance I sent you my number 4077383308 since I don’t be on here much thanks.

 

I wound up taking the air diaphram off and it had big hole but bought a whole new valve from cat since the plunger don’t want to push in or out with pressure noticed all the o rings are bad so putting new one from cat on tomorrow do I need to adjust the screw since it’s new or just pop on and go?