Newbie here. Have a 1989 300E with 123,000. The car runs great and idles smoothly yet occassionally it wants to stumble or fall on its face when I accelerate from idle. I noticed if I do the "two foot" trick and barely increase the idle to approx. 750-800rpm (per the tach) it will accelerate smoothly.

Without going down the road of replacing everything known to be a potential problem, could it be that the idle is just a tad low? It idles at approx 600-650rpm while at a stop with the trans in park. If it is low how can it be adjusted?

Thanks for the help!

The following thread was posted not long before this one. Similar situation. Consider Steve Brotherton's words.

560SEL Doesn't Hold Idle,Sometimes It Idles Roughly But Stalls As Soon As I Tap Gas !

Bad gas is becoming more common place. I spoke with a non-MB tech at a local independent garage last Saturday. He told me over the past few months they've seen more and more cars with "milky" gas in the tank. Owners are having them towed in or drive them in spitting and sputtering.

The question is asked, "where do you buy your gas?". The answer: Wal-Mart.

There is a reason why they're cheap.

Something to think about.

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"