I am still looking for help with my benz running like it has water in the gas. I have put water remover in the tank and it still will run great driving into work ( about 15 miles) and when I go out to get breakfast 30 minutes later it runs and boggs down, picks back up, when I stop it does it again. If I turn the car off it runs like new again. It is almost like when it gets warm it does this and it is not good to be scared to pull out into traffic when you don't know if it is going to stall or not. Any advise is greatly appreiciated.

I'd try replacing the fuel filter...sounds like it's clogging up and releasing with fuel pressure...unless you have already done that, in which case I would have to think about further..best of luck

Could be a fuel filter, fuel pump, can also be a symptom of a failing ignition coil. Does it lose high-RPM first? Failing ignition coils can work properly cold sometimes.

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Gone to the dark side

- Jeff

They have a habit of burning out the rotor. Center button of cap wears away.

Coils fail.

If it has tandem fuel pumps, make sure BOTH are running.

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Thanks to all who replied. Theses a great starting points that I will be doing this weekend.
Again, Thanks.