Now, I am unlkly to be pursuing this further (geography is all wrong) but I am still curios

Car has intermittant power loss. Fault code for lean mixture.

I am strongly suspecting fuel pump presure drop but it is one of those carp designs with no access panel so it is impossible to check for blocked pick ups etc without removing the entire tank! , in any case when I saw it everything was running fine.

pump is not noisy but the car does have 180,000 on it so a worn pump would be quite resonable. However I was just wondering if their is any other "Standard" faults (sticking relays etc) that might cause this on these.

Paul