Your dad sounds like a man after my own heart!
Why do you need to replace it if it's discolored? They get that way after you run a little fuel through them. Hows the pinch? That's what tells you if you need a rebuild.
If you can push the piston to and possibly through the top of the sleeve, it needs re-pinched or replaced.
Why do you need to replace it if it's discolored? They get that way after you run a little fuel through them. Hows the pinch? That's what tells you if you need a rebuild.
If you can push the piston to and possibly through the top of the sleeve, it needs re-pinched or replaced.