No rebuilding is possible at all - or really effective cleaning for that matter.

They are basically a wear item like plugs are.


Bosch (which is what is in the MB box anyway) injectors run about $40 each so you'd be looking at c. $240. In my experience, they last about 100 to 125 thousand miles. In fact, I am getting ready to replace them on my 560SEL for the second time at 190,000 miles on general principle


The reason I asked about how cold is that when injectors “dribble” out you tend to notice it most when the car has been sitting less than a few hours but more than a few minutes. A few minutes, and not much fuel has had a chance to leak out and what has cooks off. Overnight, what ever fuel that was going to leak leaked and has gassed off or gone into your oil


Bad fuel distributor symptoms tend to be more severe in my experience and pretty independent of operating temperature. How is the mileage? How does she idle?