Mulatron

well as suspected it wasn't a catastrophic oil pump failure...once the new oil sender unit was in the oil warning light behaved perfectly and i suspect water ingress (as suggested by luhbo & pasotibbs) was to blame. Used a spark plug socket to remove & replace - in minutes. thanks for useful advice

not sure whether this helps but i had a similar problem and replaced the oil line but this didn't cure the leak. eventually traced the problem to the oil breather pipe 9tat connects from the frame spinejust behind the headstock to the rear of the engine. the pipe had developed several cracks (common problem from what I understand) and was dripping onto the oil line and from there onto ground/rear tyre. also i've had a shock leak which mimiced a gearbox leak - so do check that th leak isn't originating from elsewhere good luck Tim

update thanks for the advice so far - I tried earthing the wire to the indcator light and sure enough it lit up nice & bright so suspect oil pressure switch is at fault (can't undertake switch test recommeded in manual as I don't have the right equipment). i'll order a new one and report back when fitted Tim

Hi there - 2000 V11 sport owner here just fired the old beast up after standing for a time. The oil pressure light is doing some weird things and I wondered whether others had experienced the same. First oil light wasn't on when I turned on ignition (charging light was though). Engine started and sounded good but then I noticed oil pressure light came on but faintly. Switched off then switched on again and oil light is and at correct brightness. OK try starter again and oil light goes off but then comes on again faintly. Again I switch off and switch on ignition again and oil light is there at correct brightness. Clearly I don't want to risk totalling the engine but I suspect this isn't oil pressure problem but the sender unit or a bad earth or something similar- anyone got any useful way of diagnosing sender unit or checking oil pressure all help gratefully recieved Tim