Wtf Now?!

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
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Khronik
Posts: 105
Joined: Thu Jun 10, 2010 9:04 am
Car: Pearl White - 91 N/A 2+2 Auto (RIP)
Arctic White - 96 N/A 2+0 5spd (SOLD)
Aztec Red - 90 TT 2+0 5spd (DD)
- Megan Racing DP's
- Borla Catback exhaust
- CZP ECU Upgrade
- SZ High 5 Clutch
Location: Arizona

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This morning im leaving work start up the car and a few minutes later look at the back and theres white smoke or vapor coming out of the passenger exhaust, not heavy but heavy enough

(im also hearing the thought to be lifter tick on this side of the engine and can also sometimes hear it faint through the exhaust)

have not ran the xtreme clean engine flush s*** from Z1 through it yet to see if its a dirty lifter

Drove home and the white smoke or vapor whatever it was, was gone, but I could see heat rising out from that pipe, the drivers side is fine

it was cold last night but its been colder before and I have not noticed this smoke before
any ideas?..

o2 sensors?
injectors?
doubt its spark plugs since they were replaced only a couple thousand miles ago with NGK IX Iridiums
or worse that I prob dont wanna hear?


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evildky
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condensation, if the car runs and idles fine and there aren't huge plumes fo smoke it's likley just condensation, we're at a time of year when things are cooling off especially at night

User avatar
Khronik
Posts: 105
Joined: Thu Jun 10, 2010 9:04 am
Car: Pearl White - 91 N/A 2+2 Auto (RIP)
Arctic White - 96 N/A 2+0 5spd (SOLD)
Aztec Red - 90 TT 2+0 5spd (DD)
- Megan Racing DP's
- Borla Catback exhaust
- CZP ECU Upgrade
- SZ High 5 Clutch
Location: Arizona

Post

what do you think would cause only one pipe to do that?
you can see heat coming from that same pipe

you said on another post of mine i might be running rich, can faulty o2 sensors potentially cause this too?

she seems to idle fine, but it does bounce maybe 50-100 rpms sometimes, not always usually only after starting up

Initial_Z
Posts: 941
Joined: Sun Sep 20, 2009 6:55 pm

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Khronik wrote: can faulty o2 sensors potentially cause this too?
With white smoke, it's either water vapor or coolant so you might want to check your radiator. It's only a real hazard when smoke is either blue or black.


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