I've not noticed any unusual noises from the pump. Only the whir when ignition is off. Will test the relay in the morning. Hardest part it seems will be finding somewhere to buy the relay!
If it was me i'd put some high octane fuel in it to start with, both mine and sharpies ran like pigs on the Marmite they sell in France, both FI by the way... certainly worth a try...
It only takes a fragment to slip through ,if your filter is clogged petrol will find it hard getting through... Filters you can buy at the supermarche..
Plugged battery back in, whirring began. Remove LEFT connector from double relay and the whirring stopped. So 99% sure it's a dodgy relay. It's a 13 pin plug and only seem to be able to get it from the USA! Will order it for super quick delivery and hopefully be here mid-week.
The issue appears to be the relay - leave the filter for now as disturbing it could open a whole new can of worms ...
Just as a double check, unplug the lead from the airflow sensor... as if that's slightly stuck, that'll keep the pump running too Was looking at the wiring diagram late last night....
Just thinking there may be a problem with it and its causing the pump to run continually, the red and white wire off the starter goes to the double relay and I think it is to do with the fuel pump whilst the key is turned to start the engine. Once started the AFM takes over control of the fuel pump. It could be that the pump is always on so you are massively over fuelling at times? All just theories of course
