The 1150 I've recently bought had a noisy fuel pump, noted to self that I'd change the fuel filter but that it may need replacing.
Then from somewhere in the recess of my memory I seemed to recall having a K100RS with a similar issue that was caused by water in the fuel.
One bottle of Wynns Dry Fuel later and all is quiet and humming from the fuel pump.
I assume the fuel cap on the GS's are as crap as the one fitted to the Funduro at keeping out precipitation.
Then from somewhere in the recess of my memory I seemed to recall having a K100RS with a similar issue that was caused by water in the fuel.
One bottle of Wynns Dry Fuel later and all is quiet and humming from the fuel pump.
I assume the fuel cap on the GS's are as crap as the one fitted to the Funduro at keeping out precipitation.