Does anyone know of anything I could look at for this fault. when driving and dip clutch to change gear when approaching a junction the engine does not idle but cuts out, the first light to light is the glo plug lamp. Usually worse when cold but not only when cold. Happens if you dip clutch to see if faulty when coming up to a junction. This gives me time to jump start as normally very hard to start when cut out. Havn't a clue what to do.