Subject	White smoke out the exhaust (along with black soot)..reason?
Posted by	NismoDHS on March 19, 2013 at 10:25 AM
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Message	So...just bought a 90 ttZ with only 75K original miles... I've only driven it less than 750 miles since I purchased (which included the 500 mile drive back home)...and besides seeing black soot come out the exhaust (which I'm not used to seeing b/c I have a '91 NA that only puts out a small/thin amount of black smoke)..I now have a good amount of white smoke coming out the exhaust when I only started it up in the garage for 15 minutes!!...I'm currently aware that my IAA/IACV is broken and I have to replace...but this shouldn't cause the white smoke, correct?...I'm assuming I'm running rich since the Idle Air Control Valve unit is broken and I'm using 740cc injectors (ECU programmed of course) which may cause the soot....but what are all the possible reasons for the white smoke?? (just want to make sure I order everything I need from Z1 when I order my IAA/IACV)
Follow Ups	White smoke out the exhaust (along with black soot)..reason? - NismoDHS 10:25:01 03/19/13 Condensation? Does it have a sweet smell to it? (n/m) - johnnysombrero 10:53:31 03/19/13 Thats just condensation - ttsmokin 10:56:05 03/19/13 No sweet smell to it....just the really strong smell of gas. - NismoDHS 11:00:53 03/19/13 My guess is alot of unburned fuel - Zvil (FL) 11:23:47 03/19/13 I'm hoping it's just unburned fuel due to the larger 704cc - NismoDHS 13:11:40 03/19/13 you upgraded your ECU for the larger injectors, right? - aliaZ 21:46:13 03/19/13 Yeah, the ECU is a JWT tuned for the larger injectors... - NismoDHS 07:52:40 03/20/13 have you verified you don't have any pinched injector - aliaZ 09:19:16 03/20/13 Should I be able to check & see if the injector O-rings - NismoDHS 09:23:46 03/21/13 you would have to check by pulling the plenum - aliaZ 12:06:55 03/21/13 The IACV will not create your issue. - Summeronthechain (MN) 18:27:56 03/19/13 Okay...new parts should be here soon....so once installed, - NismoDHS 07:55:37 03/20/13 I agree with black soot being related to running rich. - 300ZMang 10:10:12 03/22/13
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