take your fuel filter off ( remove the wheel arch liner on the drivers side front)
cover all the ports & give it a shake
then empty it in to a cup & stick a small magnet in
if the magnet comes out clean then i would be looking a fuel preshure reg on the pump
if there are filings on it then your looking at the high presh pump starting to fail
as for the pedal fault it could be the wire on track one starting to fail i have seen them go open circuit as all ren wireing is cheap & britle