I have a slight miss at idle and power loss that seems to go away at higher rpms. Occasionally, at idle in drive, the car sort of lurches a bit...with uneven idle.

Car has 44k miles, plugs look clean. Original caps, rotors.

Any suggestions what to check?

Thanks friends.

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1994 E420 43k (pickup, solid)
1990 300D 2.5 127k (sold) (now driven by friend)
1991 300D 2.5 73k (sold) (incredible car)