I finished the new SAC00 injector installation (after all the above discussion several months ago) and now have 4000 miles on the new injectors. Initially, all of the balance rates were -0.5 to +0.5, with one exception, Cyl #6, which came in at +3.7. Still, no reason to worry. Now, after 4k miles, I noticed a little extra diesel clatter around 1500 rpm, so decided to recheck balance rates. All were within the -4 to +4 mm3 guideline, except for Cyl #6, which is now at +14. I contacted the vendor of the injectors and they agreed to replace the one injector.



I have heard horror stories about injectors that are stuck open burning holes in pistons or trashing exhaust valves. Without pulling the head can I assess if there's been any damage?