I had all sorts of fun with my XT which had also been down through Africa. My problem manifested itself as an intermittent cut out when the vibrations from the engine changed either decelerating or with strong acceleration. It turned out I had an intermittent connection on 2 of the wires going into the CDI connector block. These were fractured inside the sheathing and took me 2 solid days to track down. In the end I found them by luck.
But it sounds like more of a fuel problem if you dont have a sudden cut out but a slow run down of revs.
Either that or a bad short which is only activated by jolt and bleeds too much current from the ignition system to maintain a reliable spark. I once had this with an old Triumph Herald.
Having said that I am not a vastly experienced mechanic and the other suggestions seem more plausible
Good luck
George
|