Another area that causes warm/hot start problems are worn or dirty/plugged injectors and their respective seals. They tend to let the fuel that should be pressurized, to "leak out" when the engine is off.

I replaced everything fuel related from the rear of the car forward. Including two accumulators. Reading several posts here and trying different parts(all new) IMPROVED THINGS A LITTLE. But never really solved my persistant warm start cranking.

Finally a moderator commenting on another's issue suggested actually replacing the injectors. With a second set of seals and a new set of injectors I now have instant starting hot or cold. Well, always had good cold starting.

Good luck

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Selling used Mercedes parts on Ebay...always changing...
cdplayer51 take a look!
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All good points & some $

car was used litle in least 4 years
& I haven't really got to use it much either so I need to get a better handle on it befor eI start changing big $ things which right now can't sfford anyway...

I probably have a wrong ICV now thats air temp operated & not electrovic
so maybe its not helping things...

getting daunting
have to stand back & breathe...

Seems it will start warm/hot ok if you re-start quick
guess that means something?

Thanks..

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83 500 SEC Euro 198K