Blue smoke puffs @ start-up... - ZR-1 Net Registry Forums

Schrade · 06-22-2014

When I start up the motor, I see blue in the exhaust. Seems like it's lasting about 10 - 12 seconds, then stops. Car has 37k.

On the road, I unloaded a few times at dusk just today, and didn't see much exhaust in the headlights behind me - maybe some Black / fuel.

I never noticed this startup oil before, except after the front was on the ramps for more than a few days. That I figured was from being '90 w/o valve stem seals (???). Pooled head oil was draining to #'s 7 + 8, and pulling through the burn?

Is it possible that OEM exhaust was absorbing some of this oil? (and it's always done it?) And only now, with headers + straight 3" tubes, it's showing more easily?

Ideas?

06-22-2014	#1
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Blue smoke puffs @ start-up... When I start up the motor, I see blue in the exhaust. Seems like it's lasting about 10 - 12 seconds, then stops. Car has 37k. On the road, I unloaded a few times at dusk just today, and didn't see much exhaust in the headlights behind me - maybe some Black / fuel. I never noticed this startup oil before, except after the front was on the ramps for more than a few days. That I figured was from being '90 w/o valve stem seals (???). Pooled head oil was draining to #'s 7 + 8, and pulling through the burn? Is it possible that OEM exhaust was absorbing some of this oil? (and it's always done it?) And only now, with headers + straight 3" tubes, it's showing more easily? Ideas? __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG]