camshaft, You might try loosening the injection lines one at a time on that bank and see if you can determine which hole is the culprit. If you find the hole that eliminates the smoke when line is loosened,you can have that injector checked and if need be,a compression check done on that hole. I did have one that I found the hole in which the smoke would stop when you loosened injection line and then smoke again when line was tightened.This engine ended up having one hole in injection pump not working properly. Hopefully this helps you in troubleshooting. Hyper Harvest II