This white/black smoke thing
Nov 4, 2004, 01:49 PM
#17
Originally Posted by rt turbo
this isnt totally correct. white can be lean from what ive experienced. but a small amount of white smoke at innitial or early WOT application will somewhat clean out the system and it should go away. black is almost always too rich... or just alot of fuel being thrown in the motor. a whitish-purple or whitish-blue smoke is oil.
oil smoke is not just caused from a worn out motor. if your turbo has bad seals they leak and your turbo blows oil into the motor. when you hvae oil in the smoke from a turbocharged car is ussually from the turbo. when oil burns in the motor it burns when you are off the throttle. when you are accelerating it rarely burns and accumulates in the cylinders.
oil smoke is not just caused from a worn out motor. if your turbo has bad seals they leak and your turbo blows oil into the motor. when you hvae oil in the smoke from a turbocharged car is ussually from the turbo. when oil burns in the motor it burns when you are off the throttle. when you are accelerating it rarely burns and accumulates in the cylinders.
I haven't noticed any smoke from my buddies car since that day. That was about a day or two after he was custom tuned by DynoFLash which is the same as what you have. Me and my buddy are having our cars custom tuned this weekend so I can let you know if I notice anything.
Nov 4, 2004, 02:37 PM
#19
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Update.
I now feel it probably is condensation in the exhaust. Even after running it hard today, I shut down for a while and started it up and noticed water droplets in the exhaust tip and when you rev it, it shoots out condensation and leaves carbon spurts on the garage floor.
I live in the desert and did not feel it was humid enough to cause condensation, but it seems there is water in the exhaust path. Maybe becuase the HKS can is tilted up slightly causes it to take a longer time to evap.
The car pulls strong and no sign of a smoke trail behind me at WOT as seen through the mirror. No oil and coolant consumption.
I was concerned with it because the car was thoroughly warmed up and driven at least 30 minutes and my GF noticed a puff of whitish smoke eminate from the tip on acceleration from a stoplight.
Maybe the rush of exhaust gases hitting the condensation caused the small puff that happened on a few occasions that she noticed.
BTW, my mods are listed below. I know there is a slight black puff that comes out when I punch it and I know I should not be running lean.
I now feel it probably is condensation in the exhaust. Even after running it hard today, I shut down for a while and started it up and noticed water droplets in the exhaust tip and when you rev it, it shoots out condensation and leaves carbon spurts on the garage floor.
I live in the desert and did not feel it was humid enough to cause condensation, but it seems there is water in the exhaust path. Maybe becuase the HKS can is tilted up slightly causes it to take a longer time to evap.
The car pulls strong and no sign of a smoke trail behind me at WOT as seen through the mirror. No oil and coolant consumption.
I was concerned with it because the car was thoroughly warmed up and driven at least 30 minutes and my GF noticed a puff of whitish smoke eminate from the tip on acceleration from a stoplight.
Maybe the rush of exhaust gases hitting the condensation caused the small puff that happened on a few occasions that she noticed.
BTW, my mods are listed below. I know there is a slight black puff that comes out when I punch it and I know I should not be running lean.
Last edited by SinCityEvo; Nov 4, 2004 at 02:42 PM.
Nov 4, 2004, 03:32 PM
#20
I think the next time your gf notices this white smoke happpen, you should try recreating the situation, and repeating it. If it goes away, you'll know that it's just condensation.
Also, in the 30 minutes of driving prior to this happening, was it city driving or highway driving? EGTs are much higher when you're on the highway and should burn off condensation much faster.
Also, in the 30 minutes of driving prior to this happening, was it city driving or highway driving? EGTs are much higher when you're on the highway and should burn off condensation much faster.
Nov 4, 2004, 03:46 PM
#21
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Originally Posted by SinCityEvo
No drivability issues and it idles fine.
My GF explained it in more detail to me. It's more confusing. Says it happened when accelerating off from a stop, BUT NOT ALL THE TIME. Like little puffs of whitish smoke that lasts she said through the RPM band of at least 1st gear.
But no signs of it at cruising speed. I punched it in 3rd and 4th and she said a puff of black smoke was seen. I know that's normal for a turbo car to run a little rich up top.
I'm flashed and custom street tuned and was at a 11:1 A/F, but that was before the high flow cat.
I have no soot on the rear bumper either, just inside the exhaust tip.
I'm hoping to have a fellow Evo bud meet up with me tomorrow and he can see what it looks like and maybe we'll switch cars and i can see firsthand.
My GF explained it in more detail to me. It's more confusing. Says it happened when accelerating off from a stop, BUT NOT ALL THE TIME. Like little puffs of whitish smoke that lasts she said through the RPM band of at least 1st gear.
But no signs of it at cruising speed. I punched it in 3rd and 4th and she said a puff of black smoke was seen. I know that's normal for a turbo car to run a little rich up top.
I'm flashed and custom street tuned and was at a 11:1 A/F, but that was before the high flow cat.
I have no soot on the rear bumper either, just inside the exhaust tip.
I'm hoping to have a fellow Evo bud meet up with me tomorrow and he can see what it looks like and maybe we'll switch cars and i can see firsthand.
Brent
Nov 4, 2004, 03:49 PM
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Originally Posted by SinCityEvo
Temp was about 55 degrees, not very cold.
The only whitish smoke to worry about is if it has a bluish tinge to it plus if you roll down the windows you will get a whiff of the burning oil smell - it's very distinct...
I think we can safely say it's condensation....
Brent
Nov 4, 2004, 05:04 PM
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Originally Posted by marksae
I think the next time your gf notices this white smoke happpen, you should try recreating the situation, and repeating it. If it goes away, you'll know that it's just condensation.
Also, in the 30 minutes of driving prior to this happening, was it city driving or highway driving? EGTs are much higher when you're on the highway and should burn off condensation much faster.
Also, in the 30 minutes of driving prior to this happening, was it city driving or highway driving? EGTs are much higher when you're on the highway and should burn off condensation much faster.
Now that it's much cooler and more humid, there's water in my exhaust. The proof is on the ground behind the car. All summer, there is no sputs of water/carbon on the painted garage floor. Now there is a nice peppered black spec spray on the floor right behind the exhaust tip. That's telling me there is water coming out and picking up the dirty carbon along the way. It must be the drastic change in weather. Just a few weeks ago it was in the 90s, now 45 to 60. That's Vegas weather.
She freaked me out by saying "there's a lot of white smoke coming out of the muffler as you drove when taking off." But none when at a steady cruise.
Thanks for everyone's help. I appreciate it. If it is something more sinister, I will update.
Last edited by SinCityEvo; Nov 4, 2004 at 05:07 PM.
Nov 4, 2004, 07:27 PM
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Originally Posted by Corey
{off topic} You hang around any of the guys from HorsePower House by chance?
I haven't noticed any smoke from my buddies car since that day. That was about a day or two after he was custom tuned by DynoFLash which is the same as what you have. Me and my buddy are having our cars custom tuned this weekend so I can let you know if I notice anything.
I haven't noticed any smoke from my buddies car since that day. That was about a day or two after he was custom tuned by DynoFLash which is the same as what you have. Me and my buddy are having our cars custom tuned this weekend so I can let you know if I notice anything.
Last edited by rt turbo; Nov 4, 2004 at 07:31 PM.
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