FSM says nothing about "centering" the nozzle in the holder. If there is, one would want to have a fixture that could screw onto the lower body, with a relief cut out that would center the nozzle while you finished the assembly. Given the small amount of wiggle room (if any) that exists between the nozzle and the lower body, I would have to be convinced that such a thing were critical to the proper operation of the injection system.

Most folks, including me until just recently, never clean their injectors at all. My thread was intended to cover only the very basics. Nevertheless, an interesting discussion. One never knows what will be started!

Jeremy

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970