Thanks for the feedback.
I have been helping a friend get their old car running again.
It is a beast...
Got this one up and running so back to mine.
I have completed the following:
Replaced the Coil, the plugs and fuel filter (had some on the self)
Rechecked the fuel pressures. (In Spec as above) and volume (+2L per minute)
Removing the oil cap causes the engine to drop RPM. (Not the tank/vacuum)
Checked the FV Relay, (Good)
I cannot hear the FV but my hearing left years ago.
Still looking...