Starting issue

[Patrol grub]

Hi all I have re entry done a egr blank on zg30crd the blanking plate has a hole to allow some gas through for the sensor. I am now having issues in ghat the car will start run for a couple seconds and stalls. I have primed it and had a mate crank it for well over an hour it starts fine and stops at almost exactly the same interval. Primer bulb is rock hard. It’s almost like it starts and something seems to block or disrupt the fuel flow. If I turn it off pump the for a short time crank it again it does s the same thing over and over again. Any suggestions I’ve had the fuel lines off up to where the hard pipe before the fuel pump but can’t get hatt last hose off. Was running fine before hand.