Originally Posted by tdoublenastywitit

Ive been advised that you should still do a diesel purge BEFORE u put in the new injectors.

So u can clean out all of the lines and all the other fuel components before u put them in. Because if you don't then All of that gunk that may be on there will go into and thru your brand new clean injectors. Dirtying them up and possibly clogging them.