Cleaning injector cups
 

Started my injector replacement today. Got passenger side removed and cups stayed in. Injectors were pretty gunky and had carbon-like build up. Some residue stayed at bottom. Can I use brake cleaner and then blow out with compressed air? Being cautious.

i used brake cleaner on a rag that didnt leave lint and a long skinny flat head to keep as much as i could from falling in the cylinder took a long time