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I recently completed intake carbon cleaning procedure due to SES light related to MAF sensor, smoothness control, and zero adjust injector codes. This week (a few days after carbon cleaning) I received another SES light with codes related to smoothness control cylinders 2 & 4 and zero adjust injector 4.
I didn't find too much carbon in my intake - there was some build up, of course, but nothing like with other's in the forum found.
I have two questions for others.
1) Has anyone attempted to run straight Liquimoly Diesel Purge through engine (vs pouring it in tank) as others do with TDIs (easier given fuel filter is in engine compartment)? Before I consider replacing injectors I'd like to give engine purge a chance. However, I cannot find posts related to others who tried using straight diesel purge, so I don't know how challenging it may be.
2) Do you suggest that I have the DDE reflashed as per SI B13-04-14 before I try to use straight diesel purge, or after?
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