I am dealing with a frozen puch piston. I have the head off shot some PB Blaster penetrating oil in the cylinder. I used a hammer and socket to move the piston back about an inch +. It is still stuck. I have noticed a lot of carbon build up on the cylinder walls, I saw no rust; what is the best method to remove that carbon?
The piston is still stuck, is it best to drive the piston back while the cylinder is still attached, or is it better to seperate the cylinder from the block as much as possible? I am going to try to clean up the cylinder walls and piston to reassemble and hopefully it will fire up.
Your comments are appreciated.