Hi, i have a 1986 subaru brat. it starts and idles well first key and runs perfectly untill i have to stop at lights or junctions where it struggles to hold idle and eventually dies. it will then start and idle well again straight off untill the next stop. it has had a good service, oil change, new fuel/air filters, radiator flush, new leads and battery, timing adjusted. i haven't changed the plugs but i think they're good and the alternator seems to work well. i have cleaned the carb with fuel system cleaner which helped but not for long. could it be an electrical problem or dirty idle jets. i would be very greatful for any suggestions to this frustrating problem