The context of the following conversation is Casey struggled to get the grill lit. Casey raked over the coals.:
Casey says I'm not sure when dinner will be ready, I am having trouble with the grill..
The friend responds What is the problem?.
Casey responds I can't seem to get it to light..
The friend responds Did you try to rearrange the charcoal?.
Casey responds Yeah, I did rake the coals over.  They are grey on the edges but don't seem to be really burning..
The friend responds You can try to add some more starter fluid, but be careful when you relight the coals..