Car just had mot. I ran it low on diesel but not to empty. Yoday car not responding well to aceleration and it feels like my old car used to when I had a split in the carburettor cap. Injector gault light comes on then car drives and acelerates out of it. Could it be dirt where I have run it too low on diesel. Would this have been caused in any way whilst mot being done. Car had oil change and winter fluids added. Thank you.