The other thing I was thinking of doing along with the fuel filter change is removing the injectors and having them ultrasonically cleaned.
Does this seem like a good idea?
And, any write up on how to do this?
As far as I can recall, the last time I removed injectors on a car it was fairly simple, with the only thing to note was to put some grease around the rubber o-ring to make sure no fuel comes out.
Can anyone comment?

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Smoke Silver 1994 E220 Coupe Automatic
0 kilometers 6 September 1994
100,635 kilometers - 6 September 2010