I am considering swapping the 02 sensor from another 190E i have that doesnt black smoke. It looks hard to get to, is it a bugger? Any hints/tips?

Also, I want to reset the fuel trim codes in the engine computer, but I dont want to lose the radio by resetting the battery ground, is there another way? I have a Becker Grand Prix tape deck with 10 presets. (no factory alarm system)

It black smoked before the SeaFoam. Any thoughts about the injectors? they look simple enough to swap out of my other 190E's.

Prevost3K

BTW - is the oil press. supposed to jump from 1.5 to 3+ when i hit the gas from a stop? I tried to fool around with the mixture setting at the air cleaner, but there was a steel ball in that hole, isnt there supposed to he a hex?