126 300SE Won't Start Hot

I HAVE A 1988 300SE THAT AFTER SETING FOR 2 MONTHS IT WILL START COLD JUST LIKE NEW BUT AFTER WARMING UP 15 MINS OR SO IT STARTS MISSING AT IDLE AND DIES WHEN YOU TRY TO START IT IT TURNS OVER GOOD BUT ONLY HITS ON 1 OR 2 CYCLINDERS IF IT STARTS IT RUNS ONLY WITH NO LOAD IF YOU PUT IT IN GEAR IT STARTS MISSING AND DIES, IF YOU LET IT SIT ABOUT 20 OR SO MINS IT STARTS RIGHT UP LIKE NEW UNTIL IT RUNS FOR A WHILE HOPE YOU MITE HAVE SOME IDEAS BE FORE I JUST START PUTING PARTS ON IT, THANK YOU FOR ANY INFO YOU MITE HAVE,DAVE GRAY

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Body and Interior Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W126

WARM START PROBLEM

TOOK AIR CLEANER LID OFF AND FOUND AIR FILTER HAD COME A PART IN PIECES AND A PIECE OF FILTER HAD STUCK BETWEEN SIDE OF PLUNGER IN CENTER OF THROTTER PLATE AND BORE ,PLUNGER IS ABOUT 3 TWO 4 INCHES IN DIA,AND IS VACUUME APPLIED ,IT STAYED STUCK IN UP POSITION AND WHEN COLD START CAME OFF IT STAYED THERE THAT CAUSED IT TO RUN TO LEAN. I CLEANED OUT ALL JUNK IN THAT AREA AND MOVED PLUNGER UP AND DOWN SO IT WORKED WITH VACUMME.THE CAR NOW STARTS AND RUNS LIKE NEW,WEIRED ONE ON ME BUT FIXED CAR , HOPE INFO HELPS SOMEONE ELSE SOME DAY, THANKS DAVE GRAY

Thanks

Hi Dave, Thanks for taking the time to post the solution to your problem. A lot of people don't do that despite the fact it is one of the most valuable aspects of this forum. It is always good to hear success stories and to share them with other readers. Thanks again, Kent

1990 300 SE cranks but will not start when hot.

1990 300 Se will not start when hot but restarts when engine is cool.Fuel pressure is ok,replaced crank position sensor,ignition module,spark plugs,fuel injectors,cold start valve,fuel filter.

Rotor Cap and Wires??

I had this problem once and It was corossion on the coil wire where it plugged into the rotor cap.