Originally Posted by 500selproud

my ole 84 500sel euro had the same problem w/ warm starting. had to crank on it for over 5 seconds when hot and then it'd barely run. When cold it started right up no issues! I replaced the fuel accumulator and it started perfect when hot and got a little more performance out of it since the fuel accumulator was leaking off fuel pressure. So i'd try that but thats just my .02. good luck man!