Hello. Having an odd issue with fuel supply. 1984 Ninety 2.25 L petrol. Replaced carb and fuel pump recently. Good idle, good rev, drives great for 3 blocks until getting up to speed, then has issue with continued supply of fuel. Have to stop for a moment then everything gets back to normal and runs good for another few blocks until same thing again. Checked fuel pressure, filter and line…all clear. Anyone heard of something similar? Thank you!