The fuel filter housing lid is probably abit warped, that tends to show up after replacing the filter.
Take the lid off, filter out, clean up the two mating faces, put the filter back in (don't get a drop of diesel on the faces) and goo it up with silicone. Lid back on and leave it overnight to dry.
It helps if you get a new filter, as the old one will dribble diesel all over and stop the silicone sticking right.
Disconnect the fuel line from the fuel filter lid as well, when the silicone is dry you can pump the primer till diesel comes out of the lid - then re-attach the fuel line.
It saves messing around priming the car - it'll run straight away and keep going - no issues with air.
Leak-off pipes are a good shout as well, they're often abit f*cked and can cause priming issues - only a tenner to replace and you'll be under the bonnet anyway.
Take the lid off, filter out, clean up the two mating faces, put the filter back in (don't get a drop of diesel on the faces) and goo it up with silicone. Lid back on and leave it overnight to dry.
It helps if you get a new filter, as the old one will dribble diesel all over and stop the silicone sticking right.
Disconnect the fuel line from the fuel filter lid as well, when the silicone is dry you can pump the primer till diesel comes out of the lid - then re-attach the fuel line.
It saves messing around priming the car - it'll run straight away and keep going - no issues with air.
Leak-off pipes are a good shout as well, they're often abit f*cked and can cause priming issues - only a tenner to replace and you'll be under the bonnet anyway.