Smoke at Idle??

[millertilldeath]

My 07lbz is churning blue smoke during idle. I changed my exhaust this week to 4" turbo back straight pipe (sounds Great). I have noticed it after getting off of the interstate,sitting in line at the drive thru. And during start up. I run my predater on 85. I havent put my finger stick on yet. I was thinking that may be the prob. dunno maybe someone can help me on this. Also after start up I noticed what seemed to be a noise that sounds like a compresser kicking on but the a/c was off. Thanks in advance.

 

[BigDaddyDiesel]

A little smoke is natural for a diesel, I would not worry too much about it, if the blue smoke is heavy then you might have a problem...

 

[BudTX]

You might want to check your balance rates with that Predator for a little peace of mind.

 

[millertilldeath]

How do I go about doing that?

 

[BudTX]

It has been a while since I had a Predator, and I do not remember the exact instructions. If you have the owner's manual, it walks you through it.

If not, look for something on the menu like "Diagnostics" or "Check Real Time Data."

 

[millertilldeath]

ok I will try that . What should my rates be? Whats good,whats bad?

 

[BudTX]

Engine running, in Park at idle should be within +/-4.

Engine running, in Drive, at idle, brakes on, should be within +/-6.

 

[Unit453]

Bud, I dont think the LBZ predators are capable of that. I think the LLY predators were the last to be able to do that. I looked for it after I traded in my 04.5 and never could find it. I could be wrong though.

 

[saratoga]

Mine will smoke at idle on occasion and this seems to be a common thing with the LBZ's.
The "smoke" I'm talking about is a light gray haze.

 

[BudTX]

Well, I hope that everything works out. I did not know that the Predator functionality decreased with the more advanced engines.

 

[millertilldeath]

Either way, Thanks for the help.

 

[big block 88]

I have never seen an LBZ not smoke at idle, thats how I know what the truck is packin infront of me, I know if it has a little smoke comein out the tail it has got the LBZ, they are fuelin pretty hard right out of the box, and factor in that you just got off a highway and the motor was dumpin fuel to move the aero dynamically challenged truck and then all of the sudden no more load on the motor, makeing smoke. I wouldn't worry to much, checking balance rates isn't a bad idea though