Questions about balance rates

[2005redlly]

I picked up a lb7 and it has a white haze and rough idle. I had my oil tested and it came back with high copper (67). No fuel in oil.

Truck is warm and in drive
Cylinder 1- -4
2-0
3- -1
4-0
5-4
6-1
7-1
8- -1

Warm in park
1- -5
2-1
3- -2
4- 1
5-4
6-1
7-2
8- -2

Wondering if the injectors are the issue?

 

[2005redlly]

Also sounds like a lope tune sometimes to me.

 

[zakkb787]

You definitely have one injector reading out of spec and one right on the line. Can’t speak as to the copper tho

 

[2005redlly]

You think it's cylinder 1 and5?

 

[Ne-max]

Time for a set of injectors

 

[2005redlly]

Is the v2 capable of turning injectors off? I was told these injectors only have 45k on them. Would only replacing the bad ones be ok?

 

[duramax on fire]

I had a haze at idle balance rates where about the same as yours.

Theres no way I would do all that work for one. If you have a bank open do all 4 just me. but you need to figure out the rough idle first. make sure its not the pump or fpr causing the idle issue.

Plus when you pull the high pressure line it fills the top of the injector full of crap. Been several guys that ruined injectors 10k miles later after head gasket job

 

[ZeroGravity58]

Could also be a bad fpr causing the lope.

 

[2005redlly]

Another thing, I can let it idle for awhile and when I leave it leaves a big cloud of white smoke. So the injectors wouldn't cause the rough idle? And also a fuel leak somewhere in the valley area.

The reluctor wheel came loose, and I got the truck truck somewhat cheap. Would the reluctor wheel cause the rough idle if it wasn't exact?

Thanks for all the help

 

[Philv]

Mine is doing the same thing. I have already diagnosed it as bad injectors. I have noticed that when the truck lopes, it'll smoke more. Sometimes it'll run smooth and very little smoke. My injectors only have roughly 80k miles, but been smoking for a long time.

 

[2004LB7]

Should check the fuel pressure. See how stable it is and how close it matches the command pressure