Thanks for your reply mbshop.

As I crudely understand the fuel system, the pressure to the fuel distributor is around 80 to 90 psi.

If the fuel accumulator is leaking, then it seems to me the fuel that escapes is only returning to the fuel line which is not pressurised.

So therefore, if the accumulator outlet is firmly sealed, I see no cause for alarm, given your reply.

However, I do stand corrected if my theory is in fact wrong, but I do possess a reasonable understanding of liquid pressures in another field.