Help: Lbz haze after letting off throttle

[Cknight199]

Okay so when I am in neutral and rev it maybe to 2k rpm's and let off the throttle, a haze of grey smoke will follow... I'll upload a vid tonight, all injectors look in check. Not eating coolant and no blowby.

 

[JoshH]

Do you have anything that will allow you to see pilot injection?

 

[DMAX497]

Josh I can hook my V2 up to it and log it. What PID do I need to log?

 

[Cknight199]

Josh I can hook my V2 up to it and log it. What PID do I need to log?

X2

 

[JoshH]

Either pilot quantity or pilot pulse width. I bet it is shutting off. On most of my race tunes, I turn it off at higher RPM to keep rail pressure up. I usually set it to shut off at 2400, but I can't say what other tuners do. I have found it makes a little bit of smoke like you describe if you rev it in neutral.

 

[Cknight199]

So it shouldn't do that in my stock tune then? Haven't even tried

 

[JoshH]

It shouldn't.

 

[Cknight199]

Now I can't get it to do it anymore, granted it's at operating temp and before it wasn't.