MY 1989 560 SEL IS VERY DIFFICULT TO START WHEN IS WARM OUTSIDE. IN COLD WEATHER IT STARTS ON THE FIRST TRY BUT WHEN I STOP AND AND TRY TO START THE CAR AFTER IT IS WARMED IT TAKES A FEW CRANKS BEFORE IT STARTS. AT ONE POINT IT JUST REFUSED TO RESTART AND I ENDED UP REPLACING THE FUEL PUMP, FUEL FILTER, ACCUMULATOR, EZL, IGNITION COIL, DISTRIBUTOR CAP, ROTOR, OVP, SPARK PLUGS, ETC, AND IT STARTED AGAIN. STILL HAVING THE SAME ISSUE WITH THE HARD START WHEN HOT....MOST RECENTLY AFTER COMING HOME FROM WORK AND TRYING TO START THE CAR IN THE MORNING IT WILL NOT EVEN CRANK. ALL THE LIGHTS WILL COME ON AND YOU CAN HEAR THE BUZZING SOUND OF THE FUEL PUMPS BUT NO CRANKING I CHECKED THE BATTERY AND CABLES FOR ANY SIGN OF CORROSION BUT EVERYTHING LOOKED FINE. I HIT THE STARTER A FEW TIMES WITH A HAMMER AND STILL NO CRANKING. I GAVE UP AND LEFT THE CAR IN THE DRIVEWAY FROM WEDNESDAY TO SATURDAY AND PUT MY WORKING PANTS ON SUNDAY TO WORK ON IT AND DECIDED TO GIVE IT ONE MORE TRY. TO MY SURPRISE THE CAR STARTED JUST FINE. CAN ANYBODY TELL ME WHAT IS GOING ON?? I AM ABOUT TO GIVE UP ON THIS CLASSIC. I HAVE OWNED THE CAR FOR A LITTLE BIT OVER A YEAR NOW. IT TOOK ME 3 MONTHS AND 2 MECHANICS TO WORK ON THE ABOVE MENTIONED ITEMS...THXS