Black "soot" on tailpipe

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March-1st-2008 | 06:25 PM

L3VZoomZooom

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Joined: Dec 2006

Posts: 30

From: Maryland

Black "soot" on tailpipe

Has any else had a black "soot" on their tailpipe. my exhaust system is stock. My only mod is a CAI. The "soot" was there pre intake.

March-1st-2008 | 08:33 PM

DEm

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Joined: Jun 2006

Posts: 230

From: Hermosillo Sonora Mexico

hu? you mean a rainbow-like-stain??? i do....

March-2nd-2008 | 08:19 PM

L3VZoomZooom

Thread Starter

Registered User

Joined: Dec 2006

Posts: 30

From: Maryland

If you mean multi- color, then no. It is black and soot like. I have seen it MX-5s 3's (2.0&2.3) . I have asked the dealer no clue. When say rainbow are you talking about over heating the metal?

March-2nd-2008 | 10:15 PM

ivo

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Joined: Oct 2005

Posts: 175

From: California

Every car has it. I've noticed the bigger the pipe the more of if you'll see. I don't know why is it there but it's normal. Just clean it once in a while and don't worry about it.

March-3rd-2008 | 02:39 AM

DEm

Registered User

Joined: Jun 2006

Posts: 230

From: Hermosillo Sonora Mexico

Quote:

Originally Posted by L3VZoomZooom

If you mean multi- color, then no. It is black and soot like. I have seen it MX-5s 3's (2.0&2.3) . I have asked the dealer no clue. When say rainbow are you talking about over heating the metal?

yup its from heat, the black one ist probably just charcoal, easily cleaned

March-11th-2008 | 02:14 PM

SilverMS3

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Joined: Dec 2007

Posts: 20

From: Minnesota

SilverMS3 is an unknown quantity at this point

Mazda's are notorious for running rich. That's why the black soot appears. Especially if you have a Speed3. I can clean mine and have black soot covering the exhaust tip a day later.