Help please, vx bank2 all missing! Black plugs..... Ect

[vx super]

my vx is MISSING issues, have replaced plugs and leads, and test drove with same problem. upon checking all plugs i noticed all on #2 bank are black with carbon..... all 3??

so thought may be 02 sensor, so i swaped both round but problem has stayed on bank#2 haven't yet replaced coils but would have thought that would affect only the connected cylinders not a whole side
??

 

[vx super]

im sorry to start up again on this but i am haveing issues diagnosing, im under the impression that it should/could be somthing simple,

 

[dirty hands]

idea only

dont think you can swap over 02 sensors like that
if one wire is longer than the other on the 02 things
then you need right and left to be specific

see berlina running rough thread a while back

try disconecting both 02 sensors and see if the motor runs smooth

member "lout"is the guy to find about this kind of stuff


I dont know how to test the coil packs them without tester or a scanner for faults