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Exhaust Smoke Colors

Started by _Viper_ , Jul 14 2006 03:25 PM

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15 replies to this topic

#1 _Viper_

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Posted 14 July 2006 - 03:25 PM

Hey all, just wondering what color smoke from the exhaust means what?

Thick White:

Bluish:

Black:

Cheers

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#2 _kangur_

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Posted 14 July 2006 - 04:07 PM

The first 2 are a sign of engine wear and black smoke usually means the car needs a tune as its not burning fuel properly.

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#3 _Yella SLuR_

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Posted 14 July 2006 - 04:07 PM

white - water

blue - oil

black - fuel

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#4 rodomo

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Posted 15 July 2006 - 12:54 PM

Rusty brown under acceleration = Lean mixture

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#5 Heath

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Posted 15 July 2006 - 04:34 PM

blue - oil

An oil problem dominantly due to worn rings

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#6 _Yella SLuR_

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Posted 15 July 2006 - 04:47 PM

^ not necessarily, can also be valve stem seals, or an inlet manifold leak to the crankcase on a V8. Need to do further testing to work out exactly which it is.

Edited by Yella SLuR, 15 July 2006 - 04:47 PM.

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#7 davelh

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Posted 15 July 2006 - 04:58 PM

black can = fluckin unleaded petrol

BRING BACK SUPER
cheers
dave

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#8 _Yella SLuR_

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Posted 15 July 2006 - 05:21 PM

Hehehe, been a while since I seen a nice light grey tail pipe after a nice long trip. Prolly the last time was when I had the 173 SL LH.

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#9 Tiny

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Posted 15 July 2006 - 06:15 PM

Your right there Yella!

THick White smoke is either burning oil.... or burning rubber.. depends on the ammount of horsepower you have

Blue smoke is also oil but in smaller quantities.. Usually past the oil rings or valve stem seals

Black is always rich fuel mixture... ( unless your running methanol...)

Cheers!

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#10 TerrA LX

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Posted 17 July 2006 - 06:55 PM

I brown lean, i always thought it was ritch.

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#11 rodomo

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Posted 17 July 2006 - 07:18 PM

^ Black is rich.

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#12 _pallbag_

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Posted 17 July 2006 - 07:28 PM

I presumed the non receival of a nice grey pipe after a trip should be contributed to the "new" unleaded fuels. I havent seen it for many many years ...