Interesting... you are describing the problem I have with my 92 500SL.

Mine also improves after 'resting' and gradually gets worse as I drive it regulrly. I do think it to be the injectors because they are about the only things that haven't been replaced.


I have a 92 400E that runs fine. The injecton systems on these cars are VERY different.

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02 S500
92 500SL
92 400E (Sold)
87 300E (Sold)
83 300D Turbo (Sold)
75 300D (Sold)
74 240D (Sold after 20 years)