I know you’ve been having problems with the fuel for a while now but didn’t you buy a pressure gauge or am I mixing you up with someone else?
Anyway, as your car is roughly the same age as my daughter’s have a look at post 26 on this thread
https://the75andztclub.co.uk/forum/s...=286990&page=3 - slightly different though as hers was difficult to start but once started relatively fine.
Regards