Alright guys, I just recently started having trouble with my lb7. It's knocking and smoking real bad. When I kill cyl number 1 it stops the knock and smoke. So I replaced the injector. Didn't solve the problem. Balance rates are between -2 and 2 on all cyl except for cyl 2 and it is -7. I've checked everything I can think of. Don't want to keep throwing money at it so I don't want to replace #2 injector until I know what is causing knock and smoke. Anything helps! Thanks!

 

did you ever get this figured out?