I recently purchased an '89 1.7TD Bilbo's Arragon, but am having some problems. On hills, when the fuel gage shows just below 1/4 tank she loses all power and the engine stops. I then have to stop and wait a couple minutes and she starts again.
It has scared the hell out of me when driving on motorways when there is no hard shoulder and she suddenly stops

Could it be a fuel intake problem? Maybe my gage is seriously inaccurate and she's actually sucking down air when the remaining fuel runs to one end of the tank?
Thanks guys and gals,