A leaking injector would have over fuelled the relevant cylinder for a while.
This is basically a rich mixture,
So no amount of regen is going to help.
If you have access to diagnostics check the injector correction ratio/%.
Good chance the ECU is subtracting fuel from the bad injector trying to change the fuel flow.
Which it can do if the injector is leaking!
Posted on Sunday 13th of May 2018Don't understand this? Ask a question