That's the image of the bill, truck shows the common signs of injector issues. White smoke at idle and acceleration yet a fine rpm-idle, grey/black exhaust when I really push it, good power. From other posts I've seen the rates are fine, but on this scale it seems they are not?

Thoughts/

 

well it sounds like injectors from the symptoms, but those balance rates sound odd

good rates are +-4 at idle and in park, and +-6 in gear at idle....... not sure what those GM rates are.....

 

I'm just going to have to replace my injectors....

 

it could only be just one...... get it retested somewhere else

 

I will... And fluids are good so idk cracked body? Would a test show that

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By that I mean injector body...coolant fluid level is fine, should I tell the other dealer to look for something specific? A leak or maybe cracked/broken fuel line?

 

if you have a cracked line you will be making oil(fuel in oil), but a balance rate test will show you exactly which one(or ones) are the culprits

 

Well it's not doing that from what I could tell? Would that cause white smoke? I'm considering return rates as well as a balance rate at different dealer. how to check for q cracked line?

 

white smoke is TOO much fuel going into the cylinders and not being properly combusted, you have a cracked injector, get the balance rates checked again and that will tell you exactly where its over fueling

where do you live?

 

Upstate NY. Ill be giving Merchant and Lincoln Diesel a call tomorrow to see what kinda deals they have going. I won't bother spending that money again at a different dealer - obviously they need or one needs to be replaced but I would rather do them all I suppose at once.

 

sorry to tell you this but balance rates wont tell you the whole picture. all it tells you is how much fuel the ecm is adding or subtracting to try and keep the idle smooth. yes it can be in indicator of failing injectors but return rates are more important.

if one of the injectors are dumping too much fuel the ecm might increase the fuel in the sister cylinder and pull fuel to the others. this will make it look like more then just the one are bad.

with the LB7 return rates are next to impossible to test with out removing the upper and lower valve covers and then reassembling everything needed to run the engine. while you are in there you might as well just replace them all.

smoking while idling is definitely an indication of injectors going bad. using the GM Tech 2 or EFI Live you can turn off injectors one at a time and see if the smoke stops.

if you continue to run it like this then it will continue to get worse until one of the injectors sticks and burns a hole in the piston or the truck wont start.

try using some injector cleaner in the fuel or use the closed loop injector cleaning mothod. it may fix the problem or help you get by until you get them all replaced.