I finally ran the injector balance test with efi, here are my averages after idling for awhile at temperture. How do they look? (2003 LB7 stock tune)
1. -1.65mm³
2. -3.49mm³
3. -.30mm³
4. -1.17mm³
5. .29mm³
6. 2.71mm³
7. 2.84mm³
8. .97mm³
I finally ran the injector balance test with efi, here are my averages after idling for awhile at temperture. How do they look? (2003 LB7 stock tune)
1. -1.65mm³
2. -3.49mm³
3. -.30mm³
4. -1.17mm³
5. .29mm³
6. 2.71mm³
7. 2.84mm³
8. .97mm³
Last edited by minytrker; January 24th, 2011 at 04:25 PM. Reason: added units
Lorenz, you need to specify units.
1. Start and run the engine until the engine coolant temperature is more than 82°C (180°F).
2. Turn OFF all accessories.
3. Hold the brake pedal in the fully applied position. A hiss will be noticeable when the brake is fully applied.
4. Place the transmission in Drive.
5. Idle the engine for more than 30 seconds.
6. Record the Balancing Rate Cyl.1-8 parameters from the scan tool while the engine is at idle speed.
7. Repeat steps 2-6 with the transmission in Neutral.
-6 mm³ and +6 mm³ is OK in gear, and -4 mm³ and +4 mm³ is OK in neutral.
"Trash that carb and get Injected!"
Thanks I added them, it was mm³. I did that in park. I will re-do it Wed and follow your instructions and post my results. Thanks for the help.
Also you need to log your fuel rate when checking them to get accurate numbers. If you have multiple injectors going out, it will lower your fuel rate at idle and keep the balance rates looking good.
1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.