I have an issue on my 2001 1.4 hatch. I've recently had the fuel pump replaced after a non starter and it worked fine. I replaced all plugs with service and oil, filter etc as it had a misfire and was only firing on 3 cylinders before the pump issue. It worked fine for a day after pump replacement but then started acting up and complete loss of power, even with foot fully to the floor. Revs would eventually start dropping and I'd get a prominent kick when taking foot off the gas. I would have to pull over and leave it for 5 mins and then it would be ok for a bit. Garage said it was air leak, found one at the inlet manifold gasket and replaced but that didn't solve the issue. Now I'm thinking it may be fuel filter but I notice when priming the pump it makes a louder sound. Not the usual whirr when priming but a deeper sound. Does this mean there is still a fuel pump issue? After 5-10 mins it will prime with usual sound but then start dying again after a good drive. It gets to the undriveable point and has no power at all. Any help would be welcome.