NEED HELP MY 82 320 IS BACKFIRES WHEN ON DOWNGRADE HILLS/ETC--SEEMS WHEN IN LOWER GEARS COMING DOWN HILL SHE SORT OF BACKFIRES IN EXHAUST SYSTEM?--JUST CHANGED PLUGS(GAP AT .24) CHANGED FUEL PUMP/FILTER--COIL/ROTOR/DISTRIBUTOR CAP/IGNITION MODULE/FUEL PUMP MODULE/AND CHANGED PLUG WIRES/----WHAT COULD CAUSE THIS?
DOESN'T SEEM TO HAVE THE POWER IT ONCE HAD EITHER?
THANKS FOR HELP--SUGGESTIONS--PAPPY