Replacing the head gaskets and noticed inj lines look corroded where they screw onto the inj,also when I removed the line all the corrosion crap fell into the top of the inj fitting-wondering if i should send them out to be ckd-should I just clean the lines or replace them - 3 or 4 of them were like that the rest looked ok

 

There's a note here:
https://www.dieselbombers.com/chevy-...r-service.html

All about cleaning the corrosion on the fuel lines.

 

Thanks -good info -wish I had it before I took lines off-I turned inj. upside down -dumped out debris-gave a spray of brake clean why it was upside down hope its ok

 

you can use some solvent to clean the injectors out, its normally closed so all the gunk can be flushed out