Hello folks
changed fuel filter yesterday ,even with ''specialist tools'' (ie trim pry bar and panel clip- popper) the orange red clips were a pain but eventually managed it...now car wont start....is it possible to have connections tank side of filter mixed up ? engine side is almost impossible to mix up as there is only one clip and a push on...i'm assuming tank side is blue line to in and black line to return ?

Could anyone confirm or deny ?