Recently my sprinter just lost power and felt like it was gonna stall on a duel carriage way...(it was just under a quarter of a tank of fuel) it didn't stop but wouldn't go above 40mph...ever since when i have a quarter of a tank or less and go round a right hand bend or round about it judders like ive run out of fuel but is fine when i turn left?? Have changed the filter and gauze on the side but it is still the same...ive tried cleaners to try free a blockage but nothing lol. I then thought perhaps the gauge is wrong but it keeps on trucking right down till i bottle driving any further....anyone else ever had this?? do i need to drop the tank?? or is there another filter i don't know about??.......cheers Paul