Hi guys thanks for both your replies.
Sheltie, about the glow plugs, they were changed about 18 months ago, the engine always starts (started) on the first turn as soon as the heater indication on the dash goes out?
Ps. when the tank pump failed, a local mechanic put a check valve on the fuel line after the filter, I didnt know any better and it did work?
David, I take your point about manuals, ( and consider myself well told off ;o) I already have the Range Rover workshop manual. Its ok for instruction, but there is no troubleshooting/ diagnosis stuff in it at all? I tried to download the Rave manual but it seemed like a huge file and my computer gave up? I suppose stuff i was looking for was, I rigged up a temp fuel supply to the fuel line on the engine side of the filter/heater. Engine didnt start, then I wondered what pressure would the fuel normally be at, at this stage? Any hints/tips on testing any of the vital components without simply replacing them?
Anyway thanks again for your replies,