Should I be freaking Out?

[564crewdog]

Hello all, I've noticed some intermittant smoke from the tailpipe. It usually occurs when you really get on the gas while accelerating and only lasts like a poof of smoke. I can't tell if it's white or blue and while I goosed the throttle in the garage, and got it to smoke, it smelled like spent gunpowder to me.

Here's the facts:
1990 Z with 38,000 miles
It's my daily driver (yes, the horror!)
Only mod is Marc's chip
I use Mobile 1 Extended Performance

Thoughts?
Thanks
Rich

[GOLDCYLON]

Any rattling underside from the CATs?

[564crewdog]

None that I can detect...

[GOLDCYLON]

Well MY 90s have no exhaust valve seat/seats so you me be just seeing normal blowby. Normally you see that upon startup which is why I asked you about the cats. I assume no error codes since you didnt state any.

[564crewdog]

No error codes, all is GTG. I did read about the earlier Z's and smoke...It's very minimal when it happens, and I can't see it while in the car since it disapates so quickly...

[LGAFF]

Could be PCV system

If its coolant your low coolant will come on...(sometimes the IH gaskets leak into the intake)