What numbers should you see on a diagnostic tool for Injector balance rates? I was in drive with the brake on and I was seeing anywhere from -0.17 to -3.14. I had three injectors showing constantly higher; #2,#3 and #4 were always -2 to -3 versus the rest were -0.something most of the time. I have had #3 and #4 replaced before for rough idle while in drive...hope this isn't a bad sign...what is spec for rates?

I believe anything below 3 is OK. Don't quote me on that.

Have you had the reflash done?

Specificed Range:

-6 mm³ and +6 mm³ - Drive Range

-4 mm³ and +4 mm³ - Neutral Range

I had the reflash done in late September about 2,500 miles ago

I took the instructions on how to measure balance rates from the Helms Service manual and posted them in several threads on this forum (note: for LB7, maybe someone can check the LLY service manual to make sure the steps are the same). Reference my most recent post, including a snapshot of the Predator display, in this link:

http://dieselplace.com/forum/showthread.php?p=420018#post420018

What you post for your "in drive" measurements are inline with what I have measured in the past.









Drive:

does the LLY predator allow for that diagnostic ? i dont have the book in front of me but was hoping someone would know for sure

That is close to what I was seeing. #2,3 and 4 were usaully -2.03 to -2.80 and the rest were -0 on the same tool for the LLY

tbone, the LLY predator does have that option under diagnostics\Real data\engine 2 setting