My 1997 Defender 300tdi 90 cuts out when the fuel level indicator reaches the red point, if I switch off and wait a minute or two it starts again, runs for another few minutes then cuts out. I am thinking it could be either a dodgy fuel level indicator or the fuel tank/feed is clogged. Can anyone pass me any advice? B.T.Y, I am not particularly mechanically skilled, basic level only but willing to give most things a go.