Light grey smoke under hard acceleration (2 Viewers)

[4Ruster]

Hey guys, my 2lt has always been underpowered and weird. I was bored on the way home from work today and floored the truck at around 2300RPM. As usual it accelerated slowly up, as the boost slowly shot up past 8psi I noticed a massive grey cloud of smoke as if I veered into the bike lane and kicked a bunch of dust up. I did it again, right when the boost goes up past 8-9psi I get a bunch of grey/white smoke.

I've always assumed it would be black if I'm over fueling.

I have my pump advanced pretty much up to the intake manifold, but it gets quiet the higher I rev like there's not enough advance.

 

[4Ruster]

Also I will add

It will blow black smoke if you rev it in neutral

 

[4Ruster]

Compression is 382-395 PSI

 

[4Ruster]

Anyone?

 

[sodafeld1]

Looks appropriately filthy to me! Seen plenty diesels do that when they floor it on the hwy.
How is fuel consumption?

 

[mudgudgeon]

Also I will add

It will blow black smoke if you rev it in neutral

This is normal. You need a shot of fuel as it comes off idle to produce heat and EMP to drive the turbo to get it to spool. Until it spools, you have a rich air : fuel ratio.

A puff of dark smoke for a few seconds when you jab the throttle like that is normal. If it stays smokey like that after the turbo had spooled, you may be overfueled

 

[TheBussman]

Possible there is an issue with the dynamic advance if as you say it gets quieter at higher revs. retarded timing also give grey white smoke.