starting problem on my sportline

hi  ive got a problem with my car you start it from  cold and its fine  but when its warm and you go to start it  about ten minutes later it  takes a bit to start and i have to pump the accelerator ive changed the valve on the fuel pump and still no joy  could it be the accumulator and help would be appreciated cheers  

sounds like it's not holding fuel pressure, but I'm not 100% on the components on a cabby  :dontknow:

first guess would have been the check valve at the front of the fuel pump but you've replaced that, could be the accumulator but you'd really need to get a pressure tester on there to check if it's holding pressure to make sure this is the problem