why are these black and grey strips/spots appearing in some parts of my mesh?

The mesh is imported from maya 2017.
i am new to unreal engine 4 and all material and lightning stuff. pls help…

This looks like that default texture that shows up when there is no material attached to the face…

thanks for the fast rply but why is it in just some parts but not entirely covering the mesh ?
btw even after assigning the material the problem is still there …ToT

Hi!

I think it will be your uv map… could you show it us please?
…also that darker triangle… could it be that some of your faces are flipped?

UV looks fine to me!!
Are you sure there are no overlapping/flipped polygons there? :S I don’t know where to check it in Maya… :S

yeah i’m sure , otherwise black polygons could be seen in maya

i resloved it myself…
solution was to set my texture cord index value for each texture