Proper way to check balance rates

[THEFERMANATOR]

Just put two new Bosch injectors in a 2005 Duramax and they both have an actual rate -2.00 to -2.40 give or take what could be the issue?

-2--2.4 isn't bad, but balance rates by themself are just numbers. You need to also know the actual main fuel rate. If you put just 2 injectors in, then they're not going to be balanced to the other 6, and I would expect to see some differences in them.

 

[DieselAmateur]

@THEFERMANATOR , What is the acceptable range for balance rates (and at what fuel rate?) in a 6.5? I'm pretty sure my GMTD ScanTech software can read balance rates on my OBD-1. I'll be doing a DB2 conversion soon but would love to know what the status of my injectors is before unplugging the ECM

 

[THEFERMANATOR]

@THEFERMANATOR , What is the acceptable range for balance rates (and at what fuel rate?) in a 6.5? I'm pretty sure my GMTD ScanTech software can read balance rates on my OBD-1. I'll be doing a DB2 conversion soon but would love to know what the status of my injectors is before unplugging the ECM

On a 6.5l you're main concern is the fuel rate. It's not like the duramax with common rail injection. Balance rates on a 6.5l are more so an indication of engine health.

 

[2010lmm]

My fuel rate in park would vary from 5mm3 to 7 mm3 and 0, 8 and 9 in drive with foot on the brake and all injectors were plus or minus one how would I figure those

 

[RI Chevy Silveradoman]

Welcome to the forum...

 

[THEFERMANATOR]

My fuel rate in park would vary from 5mm3 to 7 mm3 and 0, 8 and 9 in drive with foot on the brake and all injectors were plus or minus one how would I figure those

Sounds like they're fine, but if your fuel rate is 5 when it should be 8, then you add 3 to your balance rates. The idle fuel rate doesn't normally become an issue until it drops down to around 2-3mm3 of fuel and you get balance rates that are corrected thst drop below 1. Then the ECM starts freaking out.