morning guys I changed my fuel pump to a dw65v 18months ago just before I parked the car up. I’ve gone back to it this week after it’s been sat and put a new battery on and primed the pump a couple of times and it started ok then cut out. Primed again and turned key and all was fine... Drove for a few miles to clear the brakes etc and all was good. Went to start it the following morning and again the car would start then splutter and cut out. Then the fuse blew for the fuel system so I put it down to new battery low voltage?? Hasn’t blown since though. I have no immobiliser light flashing and the car will get going eventually. I’m thinking maybe a leak in the fuel line and air is getting in the system ?? Advice please !!