Exhaust manifold
 

Hey guys,

Just looking if there are any trick of the trait from people who have removed/replaced their exhaust manifold. I have a 2004 F150 Lariat and was able to remove 4 of the 8 nuts. Four are being stingy. Just looking for some tricks. I have wire brushed them while covering them in PB blaster for a week. Still tough.

Try heating them if you can get in there