does the 1990 jeep Wagoneer with a 4.0L eng. Have a mechanical fuel pump. on 1990 Jeep Cherokee

Vehical starts and then dies right away, doe not matter it you put your foot an the gas or not. Im sure it is the fuel pump but one guy at the parts store says its a mechanical pump and another says its in the gas tank.

Asked by for the 1990 Jeep Cherokee
1 answer 1 comment
I can see fuel injectors running down the other side of the head so it is fuel injected so it is in the tank. but are these hard to change even when I take down the gas tank and get it out