hey guys, i have a full size 90which needed afuel tank, pump housing and pump. i picked up a tank and fuel pump housing from a local junk yard from an 86 blazer and installed it with an external mr. gasket universal fuel pump (@6-12psi). the truck is barely running and sometimes not idling but i am not sure if its the fuel pump as the truck is new to me. do you guys think that this pump is pushing enough fuel? will an external with a higher psi rating work? any help or suggestions will be greatly appreciated.
thanks, mark

 

Is this a TBI system?