i have a ml 320 miss fireing on 6 and did alot to it injector coil pack replaced bad wires replaced and plugs and the moved parts around and still only on 6 is the misfire someone please help

sounds like you may need to reset and relearn the sensor gear adaptation, you have likely repaired the misfire, but since the crank sensor adaptation is off, the misfire reoccurs. i know you can reset the adaptation with factory tool, not sure if you have one available, but one would think you could reset it by disconnecting the battery for a few minutes, if you go the battery route, be sure the key is not in the ignition when you disconnect it. you will need to relearn adaptation by driving in 3rd gear while keeping the rpms under 3k for at least one minute. hope this helps.

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1967 250 S
1967 280SE
1968 250S
1971 280 SE
1973 220
1974 280 S
1975 450 SEL
1976 220 D
1979 300SD
1983 300 SD
1985 230 TE euro
1986 280SL
1986 500 SEL euro
1986 190E 2.3
1990 300 SE
2003 C230 K
2004 C230 K
1987 560SEL
1987 300SDL now in canada
2005 C230
1998 C43 AMG Sold to DON
1993 190E 2.6
300TD Former daily driver Totaled
current:
R320 CDI
Ram 2500 Cummins

thank you i'll try it i am a mechanic trying to help a friend out and it seems take i was getting a bad head ache from this it was driving me nuts i usually don't work on the high end cars but maybe i should learn more for better money lol