Dear Jim, Last week I left for work as usual but having only got a mile down the road my car broke down so I walked home. Arriving unexpectedly, I found my 21 year old baby sitter handcuffed to the bed with my husband bent over her! Obviously I'm totally devastated. Please can you help? Sally. Dear Sally, A common cause for this can be dirt in the carburettor probably sucked through from the bottom of your fuel tank via the pump. Try not to let your fuel drop too low in the tank. Hope this helps. Jim.