Chain rubbing on new derailleur and crankset My bicycle is a Rockrider 520. I have replaced my front derailleur with Shimano Acera FD-M390 and my crankset with Shimano Acera FC-M391. But chain is rubbing inside of FD even when FD cable is not attached. I tried completely loose L screw but it still rubbing and FD is not moving inside anymore. FD is parallel with chainrings and there is 3 mm gap with FD and biggest chainring. How can I solve this?

Pics: http://imgur.com/a/QJlHg
You can:


lower the front dérailleur, so that the protruding part on the inner side of front dérailleur does not touch the chain.
if the above does not fix, try to re-align the rotation of front derailleur: make it just enough so that it won't rub on the lowest gear
then check if it rubs the chain on the highest gear, i.e. 3 -9 gear. If it does, try to adjust the cable so that it can bring the front dérailleur a bit further away on higest gear. 


If all fails, it's now a trial and error from all the steps I have said.